Branch: refs/heads/main
Home: https://github.com/WebKit/WebKit
Commit: 7031d1f1b39d86e88f7d3c03de72451aa7845cf6
https://github.com/WebKit/WebKit/commit/7031d1f1b39d86e88f7d3c03de72451aa7845cf6
Author: Anne van Kesteren <[email protected]>
Date: 2026-04-07 (Tue, 07 Apr 2026)
Changed paths:
A LayoutTests/transitions/no-display-transition-top-layer-expected.txt
A LayoutTests/transitions/no-display-transition-top-layer.html
M Source/WebCore/animation/WebAnimationUtilities.cpp
M Source/WebCore/animation/WebAnimationUtilities.h
M Source/WebCore/style/StyleTreeResolver.cpp
M Source/WebCore/style/Styleable.cpp
Log Message:
-----------
Disable display property transitions for popover & <dialog>
https://bugs.webkit.org/show_bug.cgi?id=311648
rdar://171454696
Reviewed by Tim Nguyen.
The standardization story for these kind of transitions is not entirely
finished:
https://github.com/w3c/csswg-drafts/issues/13595
https://github.com/w3c/csswg-drafts/issues/13200
And because of that these transitions end up looking janky for various
customizable <select> demos:
https://codepen.io/utilitybend/pen/MWdaMxm
https://cdpn.io/pen/debug/wvYrZEV
https://codepen.io/sakupi01/pen/KwPBBNg
And as those demos demonstrate what eventually might make it into
production we should disable support now until we figure out the
correct solution.
Test: transitions/no-display-transition-top-layer.html
Canonical link: https://commits.webkit.org/310725@main
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