Bug: $getSelection() does not work inside the shadow DOM.

[ying-bin]

Lexical version:

latest

Steps To Reproduce

When I use Lexical inside a shadow DOM, I find that $getSelection() does not work, and I am unable to retrieve the selected content.

Link to code example:

https://stackblitz.com/edit/facebook-lexical-j9ccrm

The current behavior

$getSelection() does not work inside the shadow DOM.

The expected behavior

To be able to use FloatingTextFormatToolbarPlugin inside the shadow DOM.

[etrepum]

Selections and contentEditable don't really work very well in shadow DOM, you should put the editor in light DOM if you want it to work cross-platform without hacks. See also #2119

[etrepum]

This can't be fixed due to current browser limitations

[aleksandr-konovalov]

#7790