Line breaks in textarea are excessively removed.

[KUBOTAfumiya]

Version

2.6.11

Reproduction link

https://codepen.io/kubotafumiya/pen/qBOwEOV

Steps to reproduce

1. Set the el option to an element that contains a textarea (or pre) with a newline at the beginning, and create a Vue instance.

<div id="app">
<textarea>


Three line breaks are ignored.
</textarea>
</div>

new Vue({
  el: '#app',
});

What is expected?

The line breaks are removed.

What is actually happening?

Line breaks are not deleted.

---

https://html.spec.whatwg.org/multipage/syntax.html#element-restrictions

I think it's okay for a single line break to be ignored according to this specification.

[wonhyoung05]

I found the reason. Can i take this issue.

[posva]

@wonhyoung05 Yes, I couldn't find an existing issue or PR for this problem