(Note that we historically had some special-case code for synchronizing `transform` and animations of properties like `width` and `height` by shifting all the animations to the main thread, but we removed that in bug 1540906. --> Adding that bug as see-also, since I suspect this bug here would involve some of the same sorts of reasoning and might benefit from things that we learned in that exploration.)
Bug 2000047 Comment 8 Edit History
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(Note that we historically had some special-case code for synchronizing animations of `transform` with associated animations of properties like `width` and `height`; looks like we synchronized them by shifting all the animations to the main thread, but we removed that in bug 1540906. --> Adding that bug as see-also, since I suspect this bug here would involve some of the same sorts of reasoning and might benefit from things that we learned in that exploration.)