They wait for the next style resolution to be up-to-date which causes test failures, see tests that regressed with r290554. While the user impact is low, this affects the interop-2022-dialog score.
<rdar://problem/91485677>
*** Bug 243798 has been marked as a duplicate of this bug. ***
Created attachment 463467 [details] Patch
Created attachment 463468 [details] Patch
Created attachment 463469 [details] Patch
Created attachment 463491 [details] Patch
Created attachment 463492 [details] Patch
Created attachment 463499 [details] Patch for landing
Committed 256601@main (2b519ff97e74): <https://commits.webkit.org/256601@main> All reviewed patches have been landed. Closing bug and clearing flags on attachment 463499 [details].