305032 2026-01-06 21:46:32 -0800 REGRESSION (296844@main): filter region fails to cover transformed children of the filtered element 2026-01-09 17:56:05 -0800 1 1 1 Unclassified WebKit Layout and Rendering WebKit Nightly Build Unspecified Unspecified RESOLVED FIXED https://bugs.webkit.org/show_bug.cgi?id=219520 https://codepen.io/thebabydino/pen/EayKKjQ??editors=1100 InRadar P2 Normal --- 1 simon.fraser webkit-unassigned ana.tudor.lhnh bfulgham mattwoodrow simon.fraser webkit-bug-importer zalan oldest_to_newest 2169926 0 477925 simon.fraser 2026-01-06 21:46:32 -0800 Created attachment 477925 Test case Ana Tudor points out[1] that Safari has a regression related to the filter region in some situations. The codepen shows filters on an element with a transformed ::after, but this also affects transformed descendants. Simpler test case attached. [1] https://bsky.app/profile/anatudor.bsky.social/post/3mbqpvt7bjk2a [2] https://codepen.io/thebabydino/pen/EayKKjQ??editors=1100 2169927 1 webkit-bug-importer 2026-01-06 21:46:38 -0800 <rdar://problem/167671935> 2170734 2 nathan_solomon 2026-01-09 12:30:57 -0800 Pull request: https://github.com/WebKit/WebKit/pull/56354 2170833 3 ews-feeder 2026-01-09 17:56:01 -0800 Committed 305393@main (0cb4b26572e4): <https://commits.webkit.org/305393@main> Reviewed commits have been landed. Closing PR #56354 and removing active labels. 477925 2026-01-06 21:46:32 -0800 2026-01-06 21:46:32 -0800 Test case css-ref-filter-extent2.html text/html 1136 simon.fraser PCFET0NUWVBFIGh0bWw+CjxodG1sPgo8aGVhZD4KICAgIDxtZXRhIG5hbWU9InZpZXdwb3J0IiBj b250ZW50PSJ3aWR0aD1kZXZpY2Utd2lkdGgsIGluaXRpYWwtc2NhbGU9MSwgc2hyaW5rLXRvLWZp dD1ubyI+CiAgICA8c3R5bGU+CiAgICAgICAgLmJveCB7CiAgICAgICAgICAgIHBvc2l0aW9uOiBh YnNvbHV0ZTsKICAgICAgICAgICAgdG9wOiAxMjBweDsKICAgICAgICAgICAgbGVmdDogMTAwcHg7 CiAgICAgICAgICAgIHdpZHRoOiAyMDBweDsKICAgICAgICAgICAgaGVpZ2h0OiAyMDBweDsKICAg ICAgICAgICAgYmFja2dyb3VuZC1jb2xvcjogYmx1ZTsKICAgICAgICAgICAgZmlsdGVyOiB1cmwo I2YpOwogICAgICAgIH0KICAgICAgICAKICAgICAgICAuYm94OmhvdmVyIHsKICAgICAgICAgICAg ZmlsdGVyOiBub25lOwogICAgICAgIH0KICAgICAgICAKICAgICAgICAuY2hpbGQgewogICAgICAg ICAgICBwb3NpdGlvbjogYWJzb2x1dGU7CiAgICAgICAgICAgIHJvdGF0ZTogNDVkZWc7CiAgICAg ICAgICAgIHRvcDogMDsKICAgICAgICAgICAgbGVmdDogMDsKICAgICAgICAgICAgd2lkdGg6IDIw MHB4OwogICAgICAgICAgICBoZWlnaHQ6IDIwMHB4OwogICAgICAgICAgICBiYWNrZ3JvdW5kLWNv bG9yOiBncmVlbjsKICAgICAgICB9CiAgICAgICAgCiAgICAgICAgc3ZnIHsKICAgICAgICAgICAg d2lkdGg6IDA7CiAgICAgICAgICAgIGhlaWdodDogMDsKICAgICAgICB9CiAgICA8L3N0eWxlPgo8 L2hlYWQ+Cjxib2R5PgoKPHN2Zz4KICAgIDxmaWx0ZXIgaWQ9ImYiIHg9IjAiIHk9IjAiIHdpZHRo PSIxMDAlIiBoZWlnaHQ9IjEwMCUiPgogICAgICAgIDxmZUZsb29kIGZsb29kLWNvbG9yPSJncmVl biIgZmxvb2Qtb3BhY2l0eT0iMC41IiByZXN1bHQ9ImNvbG9yIi8+CiAgICAgICAgPGZlQmxlbmQg aW49IlNvdXJjZUdyYXBoaWMiIGluMj0iY29sb3IiIC8+CiAgICA8L2ZpbHRlcj4KPC9zdmc+Cgo8 cD5UaGUgYmx1ZSBzcXVhcmUgc2hvdWxkIGhhdmUgYSBwYWxlIGdyZWVuIHdpZGUgYm9yZGVyLCBi ZWhpbmQgdGhlIGdyZWVuIGRpYW1vbmQ8L3A+Cgo8ZGl2IGNsYXNzPSJib3giPgogICAgPGRpdiBj bGFzcz0iY2hpbGQiPgogICAgPC9kaXY+CjwvZGl2PiAgICAKCjwvYm9keT4KPC9odG1sPgo=