:has(:is:(foo bar)) can be affected by mutations outside the :has scope
Created attachment 459855 [details] Patch
Created attachment 459857 [details] Patch
Found 1 new test failure: webgl/2.0.0/conformance2/textures/image_bitmap_from_image_bitmap/tex-3d-rgb5_a1-rgba-unsigned_short_5_5_5_1.html
Committed r295035 (251130@main): <https://commits.webkit.org/251130@main> All reviewed patches have been landed. Closing bug and clearing flags on attachment 459857 [details].
<rdar://problem/94123183>