RESOLVED DUPLICATE of bug 248145 201736
CSS variables in keyframes don't work 
https://bugs.webkit.org/show_bug.cgi?id=201736
Summary CSS variables in keyframes don't work
Simon Fraser (smfr)
Reported 2019-09-12 13:12:34 PDT
The bubbles on this demo should have color, and do not: https://codepen.io/sandrina-p/pen/axVeGg Mentioned on https://css-tricks.com/using-custom-properties-to-wrangle-variations-in-keyframe-animations/
Attachments
Add attachment proposed patch, testcase, etc.
Radar WebKit Bug Importer
Comment 1 2019-09-12 13:13:02 PDT
<rdar://problem/55314274>
Ahmad Saleem
Comment 2 2022-08-29 07:18:38 PDT
I am able to reproduce this bug in Safari Technology Preview 152 on macOS 12.5.1 using CodePen from Comment 0 and it does not update color on circles while Chrome Canary 107 and Firefox Nightly 106 show color matching with text when you hover or move mouse on the CodePen. In case of Safari, the color remain just grey for bubbles. Just wanted to share updated testing results. Thanks!
Ahmad Saleem
Comment 3 2022-08-29 07:18:42 PDT
I am able to reproduce this bug in Safari Technology Preview 152 on macOS 12.5.1 using CodePen from Comment 0 and it does not update color on circles while Chrome Canary 107 and Firefox Nightly 106 show color matching with text when you hover or move mouse on the CodePen. In case of Safari, the color remain just grey for bubbles. Just wanted to share updated testing results. Thanks!
Antti Koivisto
Comment 4 2022-08-29 08:33:14 PDT
The issue is the we don't invalidate keyframes when a variable value changes so fail to reflect changes correctly. To implement this we need to track if the keyframe uses any variables and invalidate it on variable mutation (preferably only when a variable that is actually used changes). There is somewhat similar mechanism already for container units (KeyframeList::usesContainerUnits() etc).
Antoine Quint
Comment 5 2022-11-29 01:14:21 PST
We did some work recently (see bug 248145) to improve support of CSS variables with animations but this bug persists.
Antoine Quint
Comment 6 2022-11-29 02:25:11 PST
I was wrong, this is fixed in ToT, marking as a dupe. *** This bug has been marked as a duplicate of bug 248145 ***
Note You need to log in before you can comment on or make changes to this bug.