Wed Jul 17 2024 18:54:19 PDT
  • Product: Core
  • Resolution: ---
  • Component: Performance
247 bugs found.
ID Type Summary Product Comp Assignee▲ Status▲ Resolution Updated
1622455 Firefox tab freezes when a huge log is displayed on Github Actions Core Performance nobody UNCO --- 2022-10-11
1623408 Restoring Previous Session is sluggish Core Performance nobody UNCO --- 2022-04-07
1717016 High CPU usage on youtube Core Performance nobody UNCO --- 2024-04-25
1720236 Certain articles on lanacion.com.ar slow down Firefox a lot, or cause it to become unresponsive if read on inoreader.com (RSS reader) Core Performance nobody UNCO --- 2022-04-07
1522612 9gag gets progressively slower to render as user scrolls down page (infinite scroll) Core Performance nobody UNCO --- 2022-10-11
1544091 my cpu is 10-15 degrees hotter on firefox (55...60C) than on google chrome (45..50C) Core Performance nobody UNCO --- 2024-04-18
1556815 High CPU usage when browsing LinkedIn on Linux Core Performance nobody UNCO --- 2022-10-11
1637606 HTML Based Speed Tests Produce Slower Results or Fail Core Performance nobody UNCO --- 2022-04-07
1640535 severe input lag when using multiple keyboards under linux(X11) Core Performance nobody UNCO --- 2022-04-07
1654738 High Memory Usage, differs from Task Manager, GC, CC, Minimize Memory Core Performance nobody UNCO --- 2023-01-30
1660184 FireFox 78 x64 and newer on Windows after a while becomes slow Core Performance nobody UNCO --- 2022-04-07
1679772 Two (and more) Firefox instances running at the same time have a bad impact for other applications on systems with 8GB of RAM Core Performance nobody UNCO --- 2022-08-31
1686094 freezing on Facebook website with other tabs in the background Core Performance nobody UNCO --- 2022-04-07
1694126 Drafting longer e-mails in outlook.office.com frequently freezes / slowdowns, due to spell check / ProofingPlugin.js? Core Performance nobody UNCO --- 2022-03-02
1695439 FireFox using too much RAM Core Performance nobody UNCO --- 2024-06-24
1711037 Twitter in a container freezes computer and drags Firefox to a halt Core Performance nobody UNCO --- 2022-12-22
1714911 Unexpected memory usage in gmail tab Core Performance nobody UNCO --- 2023-01-19
1721034 Firefox Uses Over 12 GB of RAM When Accessing https://www.pch.com/sweepstakes/all-pch-sweeps Core Performance nobody UNCO --- 2022-04-07
1721070 Firefox using 12%-30% cpu for no apparent reason (FF 91.0b3) Core Performance nobody UNCO --- 2023-01-27
1753901 https://rationalwiki.org/wiki/Logical_fallacy using lots of CPU Core Performance nobody UNCO --- 2022-08-31
1762866 Task Manager is leaking memory Core Performance nobody UNCO --- 2022-08-31
1861856 [Linux] Native Wayland loads the DOM A LOT slower than XWayland? Core Performance nobody UNCO --- 2024-01-20
1876284 Firefox "crash" after a while PC locked Core Performance nobody UNCO --- 2024-03-17
1558170 Firefox freezes for 10 to 15 seconds every so often while working with Android Studio Core Performance nobody UNCO --- 2023-10-05
1841643 'tup' cookie causes laggy/janky Google Maps performance when dragging Core Performance acreskey UNCO --- 2024-01-08
845677 high number of events /s reported by powertop when idle Core Performance nobody UNCO --- 2024-07-10
1665096 Web-Platform-Tests: resource-timing resource_nested_dedicated_worker.worker.html failure Core Performance nobody UNCO --- 2022-04-25
1676799 Scrolling in firefox on Android, clicking a link has become slow; have to click a link twice or thrice to open Core Performance nobody UNCO --- 2024-02-27
1678512 Firefox slowing down to a crawl when using Whatsapp Web for several days Core Performance nobody UNCO --- 2023-03-14
1729116 High CPU usage in main process, seemingly spinning in poll()/recvmsg()=EAGAIN, but really RefreshDriver Core Performance nobody UNCO --- 2023-01-27
1750144 Insane memory usage & incorrect reporting on Emscripten website Core Performance nobody UNCO --- 2022-08-05
1766181 Firefox becomes really slow to respond/switch to on MacBook Pro M1 Max Core Performance nobody UNCO --- 2024-07-11
1774725 High memory usage, compared to Vivaldi for example Core Performance nobody UNCO --- 2022-09-03
1788552 memory Core Performance nobody UNCO --- 2024-06-28
1794014 using a lot of ram Core Performance nobody UNCO --- 2024-06-28
1811910 Extreme CPU usage in chrome process and pervasive responsiveness issues Core Performance nobody UNCO --- 2023-03-16
1815134 Memory leak in "Web Content" after using firefox for a while Core Performance nobody UNCO --- 2023-02-24
1820299 Sometimes memory usage explodes Core Performance nobody UNCO --- 2023-04-27
1823930 How to Increase Website Speed in Mozila Browser Core Performance nobody UNCO --- 2023-10-26
1827094 Excessive memory usage... since 112.0 Beta and 113.a1 Nightly Core Performance nobody UNCO --- 2023-06-06
1830648 High memory and CPU usage with many tabs and no tab unloading Core Performance nobody UNCO --- 2023-05-08
1831741 CPU throttling constantly Core Performance nobody UNCO --- 2023-08-04
1831928 Firefox is using a large amount of memory for tasks (750MB of gpu-committed) Core Performance nobody UNCO --- 2023-05-26
1837806 Firefox CPU usage hits 99 when scrolling, causing stuttering. Core Performance nobody UNCO --- 2023-06-13
1840252 YouTube takes 7 s to shows cookie banner Core Performance nobody UNCO --- 2024-04-09
1845044 Firefox is consuming too many resources and is unstable. I've gone through the troubleshooting steps to no avail. Core Performance nobody UNCO --- 2023-08-18
1847838 memory Core Performance nobody UNCO --- 2023-09-07
1851386 Regression in 117 release Core Performance nobody UNCO --- 2023-09-19
1860358 Website is broken in Mozilla. Extremely slow apparently due to a script. Core Performance nobody UNCO --- 2024-01-24
1860663 Firefox sometimes freezes with constant CPU usage when bringing up the Back history list Core Performance nobody UNCO --- 2024-01-24
1861870 Memory leak in firefox Core Performance nobody UNCO --- 2024-01-24
1870532 Firefox 120.0.1 grabs 100% of cpu resources and freezes Core Performance nobody UNCO --- 2024-02-27
1872702 https://perftest.netlify.app/stylebench/ significant slower on windows Core Performance nobody UNCO --- 2024-02-09
1876708 firefox using 3.4gb of memory with a few tabs open Core Performance nobody UNCO --- 2024-03-08
1877007 extremely high CPU usage even with one tab open on the splash screen Core Performance nobody UNCO --- 2024-03-08
1879177 3 youtube tabs are using 7GB of RAM Core Performance nobody UNCO --- 2024-03-08
1879905 firefox consuming 2 GB of RAM with 8 tabs open Core Performance nobody UNCO --- 2024-03-08
1881147 Ram memory leak Core Performance nobody UNCO --- 2024-03-21
1881653 Memory leak on PC Gamer website Core Performance nobody UNCO --- 2024-03-08
1882916 Firefox consumes a lot of CPU and makes me Mac M2 hang for a good 15 seconds Core Performance nobody UNCO --- 2024-05-21
1883246 firefox using large amount of memory Core Performance nobody UNCO --- 2024-03-08
1883475 huge amount of memory storage (constantly) idk why pls help/................................................................................................................................................. Core Performance nobody UNCO --- 2024-03-08
1883507 Memory usage is too high 23GB and up to 60% CPU usage. Core Performance nobody UNCO --- 2024-03-08
1883669 Memory Problem Core Performance nobody UNCO --- 2024-03-08
1884296 Firefox is using lots of memory when only having several tabs open Core Performance nobody UNCO --- 2024-03-11
1885382 Basically, Firefox is eating a bit too much RAM (on normal usage) Core Performance nobody UNCO --- 2024-06-18
1885796 Use to many Ram Core Performance nobody UNCO --- 2024-03-21
1891345 Enourmous RAM usage (60Gig) Core Performance nobody UNCO --- 2024-06-06
1891411 Very high memory usage(95%) by a single website Core Performance nobody UNCO --- 2024-06-11
1891632 Firefox is using significantly more memory than usual. Core Performance nobody UNCO --- 2024-04-17
1891878 I believe that Mozilla Firefox has memory leak issues. Core Performance nobody UNCO --- 2024-07-03
1891979 Very High Ram usage Core Performance nobody UNCO --- 2024-06-06
1893080 Uses a lot of ram, literally a lot even for less number of tabs opened Core Performance nobody UNCO --- 2024-06-12
1893367 excessive memory use Core Performance nobody UNCO --- 2024-06-21
1893459 Memory Leak (Isolated Web Container) Core Performance nobody UNCO --- 2024-06-12
1893481 Firefox uses all RAM when run for several days Core Performance nobody UNCO --- 2024-06-21
1893697 Grabs all my memory on AI chatbot page - started with update around 4/19/24 Core Performance nobody UNCO --- 2024-06-20
1893881 randomly massive memory usage with browser freeze Core Performance nobody UNCO --- 2024-06-20
1894286 Multiple gigabytes of tiny detached windows Core Performance nobody UNCO --- 2024-05-29
1896500 Memory Leak on newest version. 14 task manager occurrences from one tab open using over a gig of memory. Laptop is overheating and only fix is reset computer. Core Performance nobody UNCO --- 2024-05-15
1897637 Firefox consumes 65 GB RAM Core Performance nobody UNCO --- 2024-06-19
1897710 Firefox utilizing a large amount of RAM (2.5gb with small amount of TABS open) Core Performance nobody UNCO --- 2024-05-22
1898319 firefox slows down, needs relaunch to restore throughput Core Performance nobody UNCO --- 2024-07-10
1900669 Mozilla is using too much memory, keeps crashing Core Performance nobody UNCO --- 2024-06-06
1900881 ASan Nightly memory leak on certain webpages Core Performance nobody UNCO --- 2024-06-14
1902691 Ram Usage over 3k Core Performance nobody UNCO --- 2024-06-17
1904273 Firefox using a large and unexpected amount of memory Core Performance nobody UNCO --- 2024-06-25
1905038 connect.mozilla.org causes Firefox become unresponsive requiring "end task" Core Performance nobody UNCO --- 2024-07-04
1905784 Latest Update has destroyed performance Core Performance nobody UNCO --- 2024-07-03
1907708 Firefox no long scrolls with middle-mouse wheel unless window is raised to top level Core Performance nobody UNCO --- Mon 14:43
1907716 Firefox used up most of my system RAM Core Performance nobody UNCO --- Mon 20:35
1502138 [meta] Determine cause(s) of variable page load timing results Core Performance acreskey NEW --- 2022-10-11
1800713 [meta] Improve speedometer 3 score Core Performance nobody NEW --- Tue 00:47
1889193 [meta] Improve Android Performance Core Performance nobody NEW --- 2024-07-10
1816678 [meta] Determine what improvements we can make to our use and measurement of speculative connect Core Performance acreskey NEW --- 2024-06-10
1523275 ResourceTiming duration should be non-0 for failed DNS, TCP, SSL Core Performance bdekoz NEW --- 2022-03-02
1667904 Speculatively parse async and link preload scripts Core Performance dpalmeiro NEW --- 2022-08-30
1507868 [meta] Gmail is slow to initialize (slow to load emails) Core Performance nobody NEW --- 2022-10-11
1508326 Consider changes to DNS cache size/implementation if it affects pageload/etc Core Performance nobody NEW --- 2022-10-11
1543776 [meta] 5+ second delays seen while loading www.allrecipes.com on geckoview_example Core Performance nobody NEW --- 2024-04-08
1557537 High memory usage when scrolling on Reddit Core Performance nobody NEW --- 2023-08-22
1572180 68 runs 3x slower than 67 on sample script Core Performance nobody NEW --- 2022-10-11
1583220 Visual metrics: Fenix is significantly slower than Chrome for the site https://cnn.com Core Performance nobody NEW --- 2024-04-08
1583222 Visual metrics: Fenix is significantly slower than Chrome for the site https://www.reddit.com Core Performance nobody NEW --- 2024-04-08
1585327 Add normal-priority event queue delay time to Responsiveness measurements Core Performance nobody NEW --- 2022-10-11
1611279 Identify Mozilla libraries built for Android that could be built with optimizations for speed Core Performance nobody NEW --- 2023-07-12
1613760 [fission-power] Synchronize periodic background tasks (such as expiration tracker ticks) across content processes Core Performance nobody NEW --- 2024-06-28
1613824 Apple Newsroom page takes a long time to load (30 seconds) Core Performance nobody NEW --- 2024-04-08
1614425 https://www.fido.ca/ Pages load on mobile is several seconds slower than chrome Core Performance nobody NEW --- 2024-04-08
1626132 Ghost-Windows from reddit Core Performance nobody NEW --- 2022-04-07
1646449 Background tabs stuck loading while CPU is under heavy load Core Performance nobody NEW --- 2024-04-02
1649890 High CPU use on Techradar Core Performance nobody NEW --- 2023-01-27
1650708 Firefox takes 50% more time than Chrome to load/reload pages on Boardgamegeek Core Performance nobody NEW --- 2024-04-08
1659359 Heavy janking while doing page up/down on while loading a few tabs in the background Core Performance nobody NEW --- 2022-04-07
1660838 LinkedIn - high resource use (aka fans go crazy) on MacOS Core Performance nobody NEW --- 2022-04-07
1667250 Fenix loads adobe.com 4 seconds slower than Chrome Core Performance nobody NEW --- 2022-03-02
1675628 Checkerboarding on scrolling wired.com article Core Performance nobody NEW --- 2022-04-07
1692035 Opening a new browser window feels slow Core Performance nobody NEW --- 2022-03-02
1693382 Firefox parent process has very high memory usage and a large number of "ports" Core Performance nobody NEW --- 2022-05-13
1698338 Ads on https://www.golem.de/ cause a permanent ~50% load of Firefox Core Performance nobody NEW --- 2022-09-15
1712512 Memory usage skyrockets time to time on crunchyroll.com Core Performance nobody NEW --- 2023-05-11
1714188 Loading website lanouvellerepublique.fr blocks the browser for several seconds Core Performance nobody NEW --- 2022-04-07
1719556 qatarairways.com is slow to load in Firefox on Android Core Performance nobody NEW --- 2024-04-08
1722057 Performance problem in performance.measure() on the theatlantic.com Core Performance nobody NEW --- 2022-03-02
1727380 Broken Links in Performance Documentation Core Performance nobody NEW --- 2022-04-29
1737178 TIME_TO_FIRST_INTERACTION_MS probe is declared opt-out but code checks if Telemetry::CanRecordExtended Core Performance nobody NEW --- 2022-04-29
1764227 Out of Memory issue for ensonhaber.com Core Performance nobody NEW --- 2023-02-22
1817143 Intermittent tabswitch | application crashed [@ ZwWaitForAlertByThreadId] Core Performance nobody NEW --- 2023-08-04
1822348 [meta] Milestone 1: Improvements to our use and measurement of speculative connect Core Performance nobody NEW --- 2024-02-03
1822352 [meta] Milestone 2: Improvements to our use and measurement of speculative connect Core Performance nobody NEW --- 2023-05-05
1892367 3%-5% regression on multiple AWFY-SP2 benchmark suites around 17Apr2024 (mostly on todo-mvc-Deleting- XXXX type benchmarks) Core Performance nobody NEW --- 2024-06-12
1570090 Investigate fast first paints Core Performance smaug NEW --- 2022-10-11
1551299 [meta] JS Scheduling Improvements Core Performance dpalmeiro NEW --- 2022-10-11
1393617 Expose a safe same-origin profiler API to the web Core Performance nobody NEW --- 2022-10-11
1503371 Large local files with many pictures load extremely slow Core Performance nobody NEW --- 2022-10-24
1503559 Experiment: train PGO build with full websites, evaluate performance with Visual Metrics Core Performance nobody NEW --- 2022-10-11
1503830 Firefox significantly impacted by high CPU load compared to other browsers / programs Core Performance nobody NEW --- 2024-07-01
1522311 On Android, scrolling m.imgur.com displays blank frames for long periods of time and shows images with a delay Core Performance nobody NEW --- 2022-10-11
1532115 [arm64-windows] Idle battery consumption on imgur is almost 2x higher than Edge Core Performance nobody NEW --- 2022-10-11
1535381 Experiment with setting thread affinity in worker threads Core Performance nobody NEW --- 2024-05-16
1549723 Enable the startup mainthread IO mochitests on debug builds Core Performance nobody NEW --- 2024-04-02
1559377 Performance observer seems to be coupled to resource timing buffer Core Performance nobody NEW --- 2022-10-11
1569412 Firefox 68 on wife's MacBook Air 2015 macOS 10.14.5 is getting dreadfully slow and no way to find out why Core Performance nobody NEW --- 2022-10-11
1573137 User reported extreme Android battery consumption - Firefox for Android 68.0 Core Performance nobody NEW --- 2022-10-11
1578161 [meta] Performance issues with https://www.tvnow.de Core Performance nobody NEW --- 2022-10-11
1592366 YouTube live streaming is janky and sometimes the image would freeze completely. Core Performance nobody NEW --- 2022-10-11
1599508 Enabling Safebrowsing is introducing significant noise in network throttled pageload tests Core Performance nobody NEW --- 2022-10-11
1604248 [meta] Geckoview page load performance issues Core Performance nobody NEW --- 2023-10-11
1605513 Slashdot tab has consistently high energy impact (score of >19) Core Performance nobody NEW --- 2022-10-11
1607604 Add telemetry probe for how Firefox desktop is started Core Performance nobody NEW --- 2022-10-11
1614415 High CPU/janky performance when dragging on Tradingview charts Core Performance nobody NEW --- 2024-01-01
1629649 Excessive memory usage on 32gb machine Core Performance nobody NEW --- 2022-04-07
1643226 [performance] Very high CPU usage and slow scrolling Core Performance nobody NEW --- 2023-01-27
1646174 [Meta] Blob: on GamesRadar consumes entire cpu core when the active tab. Core Performance nobody NEW --- 2023-01-27
1646496 Memory leak degradation Core Performance nobody NEW --- 2022-04-07
1648233 High CPU usage by idle Firefox Core Performance nobody NEW --- 2023-01-27
1648793 Stuttering while scrolling on dual displays with game or video playing in one screen (Nvidia 2070, 2x 1440p@144hz) Core Performance nobody NEW --- 2022-04-07
1652273 ts_paint_webext regression due to a performance cliff (tripped in the second instance by separating out opensearch initialization ) Core Performance nobody NEW --- 2022-03-09
1652793 Firefox gradually becomes slower to respond, until it becomes completely unresponsive Core Performance nobody NEW --- 2022-06-20
1656386 Slow loading of Medium article on Moto G (XT1031) Core Performance nobody NEW --- 2024-04-08
1659286 Jank when closing tabs in a full tab bar from session restore Core Performance nobody NEW --- 2022-04-07
1663768 9to5google article takes 2x as much time to load as Chrome Core Performance nobody NEW --- 2024-04-08
1667248 Fenix loads cloudflare.com 5 seconds slower than Chrome Core Performance nobody NEW --- 2022-04-07
1673988 Laggy Performance in bartamanpatrika.com in fenix Core Performance nobody NEW --- 2022-04-07
1679309 More checkerboarding than Edge on politico.com, on a two core machine Core Performance nobody NEW --- 2022-04-07
1679770 Add improved telemetry for paint responsiveness Core Performance nobody NEW --- 2022-04-07
1681088 Consider making speculative connections to minimize redirection time Core Performance nobody NEW --- 2022-04-07
1683560 Huge performance regression in webgame on https://project-f.github.io Core Performance nobody NEW --- 2022-03-02
1684233 NYmag article causes laptop fans to kick in Core Performance nobody NEW --- 2022-08-31
1685835 Too many tabs of one site can cause Firefox to lag Core Performance nobody NEW --- 2022-04-07
1688140 Slow appearance of article text when scrolling medium.com Core Performance nobody NEW --- 2022-08-31
1688943 Consider converting timestamps in PerformanceResourceTiming and PerformanceNavigationTiming on creation Core Performance nobody NEW --- 2023-07-18
1688955 po-disconnect-removes-observed-types test have some failures Core Performance nobody NEW --- 2022-03-02
1688956 po-observe-repeated-type tests have some failures Core Performance nobody NEW --- 2022-03-02
1715626 Fix up patches to address navigation of performance docs Core Performance nobody NEW --- 2022-08-31
1715827 Fenix metrics for MR2 Core Performance nobody NEW --- 2022-08-31
1724783 Poor performance printing to PDF from large documents Core Performance nobody NEW --- 2022-04-07
1725178 Worse CPU usage on twitch than Edge/Chrome Core Performance nobody NEW --- 2023-04-20
1733307 natursteine-rath.at - Very slow page load Core Performance nobody NEW --- 2022-04-07
1733806 Make TTI/TTFI to use first-contentful-paint instead of contentful composite Core Performance nobody NEW --- 2022-05-11
1734490 Fenix loads fonts later than Chrome on aa.com.tr Core Performance nobody NEW --- 2022-06-26
1736916 [Meta] Firefox has bursts of activity every 5 minutes Core Performance nobody NEW --- 2023-04-03
1738784 Investigate why we're slower on awfy (several sites) Core Performance nobody NEW --- 2022-08-31
1749365 [Meta] Twitch volume slider is very laggy on slower hardware Core Performance nobody NEW --- 2022-09-23
1750463 "This page is slowing down your browser" notifications cause resize events, which can hang slow-to-layout pages even more Core Performance nobody NEW --- 2022-02-15
1810192 [MacOS][Speedometer2] SetTimeout overruns by 100ms while main-thread is idle Core Performance nobody NEW --- 2023-11-13
1837279 Page performance on Atlassian products (specifically Confluence) very slow and clunky when editing Core Performance nobody NEW --- 2024-02-22
1870279 30 - 6.86% perf_reftest_singletons getElementById-1.html / perf_reftest_singletons attr-selector-1.html + 3 more (Linux) regression on Fri December 8 2023 Core Performance nobody NEW --- 2024-03-14
1875307 The "View in map" image place holder loads slower compared to Chrome at expedia.com Core Performance nobody NEW --- 2024-06-06
1540683 Investigate performance impact of tuning the number of SSL Cert threads on low-end hardware Core Performance sefeng NEW --- 2022-10-11
1778356 Ensure WPTs for LCP are passing as expected Core Performance sefeng NEW --- 2023-03-24
1843821 Huge memory and CPU usage on https://jp.mercari.com/ Core Performance nobody NEW --- 2023-07-28
1406382 Unlimited RAM usage on some specific page Core Performance nobody NEW --- 2022-09-26
1504337 Consider if it makes sense to use HTTP1.1 on cellular connections Core Performance nobody NEW --- 2022-10-11
1670193 Google Meet high energy impact on macOS 10.15.7 Core Performance nobody NEW --- 10:29:49
1670960 Consider to add telemetry for wake ups happening in background processes Core Performance nobody NEW --- 2022-08-31
1814951 [speedometer] setTimeout throttling on Windows has latency of 15ms vs 4ms for Chrome Core Performance jlink NEW --- Tue 09:45
447581 startup performance tracking bug [meta] Core Performance nobody NEW --- 2024-06-20
1260981 [Meta] Identify the cause of performance problems in using google docs Core Performance nobody NEW --- 2023-02-28
1351755 Provide "Slight/Light/Low power/Battery saving/Battery saver" mode option Core Performance nobody NEW --- 2023-06-26
1436778 UBSan: value is outside the range of representable values of type 'unsigned int' /dom/performance/PerformanceTiming.cpp:92 Core Performance nobody NEW --- 2022-09-19
1492218 [meta] Report First Input Delay telemetry for page loads Core Performance nobody NEW --- 2023-12-05
1603562 [meta] Fission Performance Tracker Core Performance nobody NEW --- 2022-10-11
1622721 Slow performance when scrolling Firefox subreddit top posts of the week Core Performance nobody NEW --- 2023-04-03
1640949 Evaluate performance of a build with the profiler disabled Core Performance nobody NEW --- 2022-08-25
1682508 [Meta] Power usage investigations Core Performance nobody NEW --- 2024-06-28
1689392 [Meta] investigate performance issues on Reddit. Core Performance nobody NEW --- 2023-05-19
1691100 suspend cpu to background tabs Core Performance nobody NEW --- 2024-06-28
1700778 [meta] WebRTC performance bugs Core Performance nobody NEW --- 2022-03-28
1709767 performance.now() pauses during sleep on Linux and macOS, which is inconsistent with the High Resolution Time spec Core Performance nobody NEW --- 2024-06-09
1722325 [meta] Cumulative Layout Shift (CLS) implementation Core Performance nobody NEW --- 2024-01-09
1727370 Higher power usage on gem.cbc.ca in Firefox than Chrome on macOS (2019 MBP 10.15) Core Performance nobody NEW --- 2022-03-02
1773543 www.aa.com.tr/tr loads more slowly than Chrome Core Performance nobody NEW --- 2024-04-08
1779363 Large performance difference when loading a PDF in "performance" vs "energy saving" mode Core Performance nobody NEW --- 2023-01-17
1779879 Instagram record is bogus? Core Performance nobody NEW --- 2022-07-16
1805255 Firefox has 50% more soft page faults than Chrome running Speedometer 2 Core Performance nobody NEW --- 2024-03-13
1814028 The slow script warning notification bar appears on www.sanwa.co.jp Core Performance nobody NEW --- 2023-03-02
1815311 Investigate current source of slowness in Speedometer BackboneJS subtest Core Performance nobody NEW --- 2023-03-01
1820840 High CPU/GPU usage on website https://openbb.co/ Core Performance nobody NEW --- 2023-03-09
1824332 Memory Leak (Isolated Web Container) Core Performance nobody NEW --- 2023-04-27
1825084 flightaware.com page becomes insensitive to user input/links cannot be navigated to when loading Core Performance nobody NEW --- 2023-04-19
1831458 Very high memory usage on Zenni Optical's website Core Performance nobody NEW --- 2023-05-26
1846333 Animated clouds on http://www.wdrmaus.de use around 60% CPU and GPU load Core Performance nobody NEW --- 2023-12-04
1849963 sorting_algorithms_comparison.md seems to be unlinked and obsolete Core Performance nobody NEW --- 2023-09-07
1854921 Scripts in closed tabs keep using 100% of a CPU core Core Performance nobody NEW --- 2023-10-05
1858535 Speedometer 3 score is ~1 point lower than Chrome on Windows 11 Surface Pro 7+ device, when on battery power Core Performance nobody NEW --- 2024-01-23
1861991 Bad mutex contention when allocating strings in JSON.parse() in TodoMVC-Javascript-ES6-Webpack on Android Core Performance nobody NEW --- 2024-01-09
1864178 LCP shows up in sp3 profiles Core Performance nobody NEW --- 2024-01-09
1867074 60% CPU usage of content process because of memory leak in gc-heap on Amazon product page Core Performance nobody NEW --- 2024-06-28
1868643 Memory leak and high CPU consumption at marketwatch.com Core Performance nobody NEW --- 2024-05-06
1874342 Rapid memory increase on a demo that continues after you stop the demo, and profile shows 8s hang in content process and 1s in parent process Core Performance nobody NEW --- 2024-03-08
1878531 Explore creating a "maintainance" process that does bunch of cleanup/query in the background while the browser is closed with the aim of improving Firefox startup Core Performance nobody NEW --- 2024-03-08
1880530 [linkedin.com] Adding multiple contacts in rapid succession feels slower on Firefox Nightly Core Performance nobody NEW --- 2024-06-18
1881248 Don't show drag and drop previews for very large images Core Performance nobody NEW --- 2024-04-29
1894804 [meta] High Friction Android Issues Core Performance nobody NEW --- 2024-06-27
1899370 Very slow loading https://www.darenc.gov in slow network conditions Core Performance nobody NEW --- 2024-06-07
1901603 Firefox content processes intermittently freeze/become unresponsive on MacOS Core Performance nobody NEW --- 2024-06-21
1904184 Opening a page shows 150ms spent in json stuff that is categorized under "Network" jank Core Performance nobody NEW --- 2024-06-22
1906276 theweathernetwork.com - The map is populated slow compared to Chrome Core Performance nobody NEW --- 2024-07-10
1906726 Fenix pageload progress bar can take multiple times longer to complete than Chrome (e.g. 50 seconds vs 10 seconds) Core Performance nobody NEW --- 2024-07-10
1907002 Win11 machines Vs Win10 machines show a larger relative difference in scores between Nightly and Chrome on SP3, SP2 and other benchmark suites Core Performance nobody NEW --- Fri 08:32
1522282 Delayed image loading on low end ARM devices Core Performance sefeng ASSI --- 2023-02-22
1543783 m.facebook.com live site loads 1s slower in Fenix/GVE than Fennec 64 Core Performance sefeng ASSI --- 2024-04-08
1238503 [e10s] Elements on page don't immediately respond to page scrolling with mouse wheel Core Performance kberezina ASSI --- 2024-07-09
1661594 Firefox 79.0.5 struggles with reddit videos. Core Performance nobody REOP --- 2024-04-08
1696171 Navigation on YouTube and YouTube Music gets CPU to 100% Core Performance nobody REOP --- 2023-01-27
1743351 Memory spike when closing 200-300 tabs at once Core Performance nobody REOP --- 2024-06-19
247 bugs found.
REST | CSV | Feed | iCalendar
Change Columns 		Edit Search

File a new bug in the "Core" product