Safari and WebKitGTK have some failures in WPT's web-animations/interfaces/Animation/commitStyles.html: https://wpt.fyi/results/web-animations/interfaces/Animation/commitStyles.html?run_id=5684229927075840&run_id=5715930678034432&run_id=5099062846029824&run_id=5655709666508800 Over in https://github.com/mdn/browser-compat-data/pull/7233#issuecomment-780920038, Brian Birtles looked over the failures and very helpfully broke them down. The conclusion was the issues don't look very severe, but I'm filing this issue so that his analysis can be found from this bug tracker in case someone looks into it. Inlining the comment here too for searchability: - Incorrect handling of logical properties -- fairly minor? - Incorrect handling of custom variables -- probably due to not implementing registered properties -- Firefox also fails this for that reason - Incorrect unit conversion / serialization for em units, line-height, transforms -- only an issue if you are actually reading back the value from style - Incorrect handling of animations in a stack of composited animations -- pretty minor case - Incorrect handling of redundant changes with regards to mutation observers -- edge case
Thanks for raising this Philip. For composited animations, we simply don't support them (yet). The other issues are known as well, but a bug tracking this test is welcome.
<rdar://problem/74735215>
"Incorrect handling of custom variables" will be fixed in bug 242007.
There is only one remaining failing subtest, which is tracked by bug 246913, but it will require some doing since we need do implement the mix() function from CSS Values Level 4.