[csswg-drafts] [css-position-4][css-anchor-position] Top layer exit animations require tracking a lot of state for implicit anchors (#13595)

nt1m has just created a new issue for https://github.com/w3c/csswg-drafts:

== [css-position-4][css-anchor-position] Top layer exit animations require tracking a lot of state for implicit anchors ==
Before top layer exit animations, we had to store:
- whether an element is an invoker
- what the invoked popover is
- what element invoked a popover

Now we need to store these in addition to the above:
- whether an element previously invoked something in the pending top layers exit list (to determine whether it is still an implicit anchor)
- what the implicit anchor of a popover is

This is a bunch of work to track correctly, and it's unclear to me how to track those correctly with different edge cases.

cc @emilio @keithamus 

Please view or discuss this issue at https://github.com/w3c/csswg-drafts/issues/13595 using your GitHub account


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Received on Tuesday, 3 March 2026 23:31:18 UTC