[Webkit-unassigned] [Bug 209822] Cannot style ::selection for a flex container

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=209822

Tyler Wilcock <twilco.o at protonmail.com> changed:

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                 CC|                            |twilco.o at protonmail.com

--- Comment #3 from Tyler Wilcock <twilco.o at protonmail.com> ---
Did a little digging into this one.  From what I can tell, this is happening because the TextRender's parent is sometimes set as anonymous when it maybe shouldn't be.

https://github.com/WebKit/webkit/blob/master/Source/WebCore/rendering/TextPaintStyle.cpp#L161

calls here:

https://github.com/WebKit/webkit/blob/master/Source/WebCore/rendering/RenderText.h#L303#L306

eventually calling here, and shortcircuiting `nullptr` in the `isAnonymous()` check:

https://github.com/WebKit/webkit/blob/master/Source/WebCore/rendering/RenderElement.cpp#L1407#L1410

Also of note, this behavior is not specific to `display: flex`.  See this repro with `display: block` and the introduction of a sibling div.  Again, "some text" should be highlighted red, assuming Chrome and Firefox are correct and our behavior is not.  Removing the sibling div results in the correct behavior.

https://jsfiddle.net/dwuzsmft/

Going to do some more investigation.

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