314629 2026-05-12 02:20:35 -0700 [webkit-box] Allow z-index on static display:-webkit-box items 2026-05-19 01:07:44 -0700 1 1 1 Unclassified WebKit Layout and Rendering WebKit Nightly Build Unspecified Unspecified RESOLVED FIXED BrowserCompat, InRadar, WPTImpact P2 Normal --- 1 ahmad.saleem792 zalan bfulgham karlcow koivisto simon.fraser webkit-bug-importer zalan oldest_to_newest 2210069 0 ahmad.saleem792 2026-05-12 02:20:35 -0700 Hi Team, While going through WPT, came across another failing case: Blink Commit: https://chromium-review.googlesource.com/c/chromium/src/+/7836325 Test Case: http://wpt.live/compat/webkit-box-z-index.html ^ Chrome is aligning with Firefox in above commit. WPT Test Case: https://wpt.fyi/results/compat/webkit-box-z-index.html?label=master&label=experimental&q=webkit-box-z-index.html Thanks! 2210126 1 479633 zalan 2026-05-12 07:12:42 -0700 Created attachment 479633 [fast-cq]Patch 2210141 2 ews-feeder 2026-05-12 08:35:13 -0700 Committed 313081@main (e3b94346c519): <https://commits.webkit.org/313081@main> All reviewed patches have been landed. Closing bug and clearing flags on attachment 479633. 2210144 3 webkit-bug-importer 2026-05-12 08:36:14 -0700 <rdar://problem/176886461> 479633 2026-05-12 07:12:42 -0700 2026-05-12 08:35:15 -0700 [fast-cq]Patch bug-314629-20260512071241.patch text/plain 3350 zalan RnJvbSA0NDMzNGZiMjk5MjdkMmUzNDZjYmM3MjZmYjM1M2RiMWRhNzZkNTI5IE1vbiBTZXAgMTcg MDA6MDA6MDAgMjAwMQpGcm9tOiBBbGFuIEJhcmFkbGF5IDx6YWxhbkBhcHBsZS5jb20+CkRhdGU6 IFR1ZSwgMTIgTWF5IDIwMjYgMDc6MTA6NDEgLTA3MDAKU3ViamVjdDogW1BBVENIXSBbd2Via2l0 LWJveF0gQWxsb3cgei1pbmRleCBvbiBzdGF0aWMgZGlzcGxheTotd2Via2l0LWJveAogaXRlbXMg aHR0cHM6Ly9idWdzLndlYmtpdC5vcmcvc2hvd19idWcuY2dpP2lkPTMxNDYyOQoKUmV2aWV3ZWQg YnkgTk9CT0RZIChPT1BTISkuCgogIDxkaXYgc3R5bGU9ImRpc3BsYXk6IC13ZWJraXQtYm94OyI+ CiAgICA8ZGl2IHN0eWxlPSJ6LWluZGV4OiAxOyI+Li4uPC9kaXY+CiAgPC9kaXY+CgpUaGUgY2hp bGQgc2hvdWxkIGdldCBhIGxheWVyIChzdGFja2luZyBjb250ZXh0KSBmcm9tIHotaW5kZXg6IDEs IGJ1dCBpdCBkb2VzCm5vdC4gV2l0aCBkaXNwbGF5OiBmbGV4IGl0IHdvcmtzIGNvcnJlY3RseS4K ClRoZSBzdHlsZSBhZGp1c3RlciBkZWNpZGVzIHdoZXRoZXIgdG8gaG9ub3Igei1pbmRleCBvbiBu b24tcG9zaXRpb25lZCBlbGVtZW50cwpieSBjaGVja2luZyBpZiB0aGUgcGFyZW50IGlzIGEgZmxl eC9ncmlkIGNvbnRhaW5lci4gQSBmbGV4IGl0ZW0gd2l0aCB6LWluZGV4CmNyZWF0ZXMgYSBzdGFj a2luZyBjb250ZXh0IGV2ZW4gd2l0aG91dCBwb3NpdGlvbjogcmVsYXRpdmUvYWJzb2x1dGUuIFRo ZSBjaGVjawp1c2VkIGlzRmxleGlibGVPckdyaWRGb3JtYXR0aW5nQ29udGV4dEJveCgpIHdoaWNo IG9ubHkgY292ZXJzIG1vZGVybiBmbGV4CihkaXNwbGF5OiBmbGV4KSBhbmQgZ3JpZCAtIG5vdCB0 aGUgZGVwcmVjYXRlZCAtd2Via2l0LWJveC4KCiogU291cmNlL1dlYkNvcmUvc3R5bGUvU3R5bGVB ZGp1c3Rlci5jcHA6CihXZWJDb3JlOjpTdHlsZTo6QWRqdXN0ZXI6OmFkanVzdCk6Ci0tLQogU291 cmNlL1dlYkNvcmUvc3R5bGUvU3R5bGVBZGp1c3Rlci5jcHAgICAgICAgICAgICAgICAgICAgICB8 IDIgKy0KIC4uLi9jb21wYXQvd2Via2l0LWJveC16LWluZGV4LWV4cGVjdGVkLmh0bWwgICAgICAg ICAgICAgICAgfCAyICsrCiAuLi4vdzNjL3dlYi1wbGF0Zm9ybS10ZXN0cy9jb21wYXQvd2Via2l0 LWJveC16LWluZGV4Lmh0bWwgIHwgNyArKysrKysrCiAzIGZpbGVzIGNoYW5nZWQsIDEwIGluc2Vy dGlvbnMoKyksIDEgZGVsZXRpb24oLSkKIGNyZWF0ZSBtb2RlIDEwMDY0NCBMYXlvdXRUZXN0cy9p bXBvcnRlZC93M2Mvd2ViLXBsYXRmb3JtLXRlc3RzL2NvbXBhdC93ZWJraXQtYm94LXotaW5kZXgt ZXhwZWN0ZWQuaHRtbAogY3JlYXRlIG1vZGUgMTAwNjQ0IExheW91dFRlc3RzL2ltcG9ydGVkL3cz Yy93ZWItcGxhdGZvcm0tdGVzdHMvY29tcGF0L3dlYmtpdC1ib3gtei1pbmRleC5odG1sCgpkaWZm IC0tZ2l0IGEvU291cmNlL1dlYkNvcmUvc3R5bGUvU3R5bGVBZGp1c3Rlci5jcHAgYi9Tb3VyY2Uv V2ViQ29yZS9zdHlsZS9TdHlsZUFkanVzdGVyLmNwcAppbmRleCBmYWViMzNlMjlkZjAuLmMyZTlk NjEyYTA2YyAxMDA2NDQKLS0tIGEvU291cmNlL1dlYkNvcmUvc3R5bGUvU3R5bGVBZGp1c3Rlci5j cHAKKysrIGIvU291cmNlL1dlYkNvcmUvc3R5bGUvU3R5bGVBZGp1c3Rlci5jcHAKQEAgLTU1NCw3 ICs1NTQsNyBAQCB2b2lkIEFkanVzdGVyOjphZGp1c3QoUmVuZGVyU3R5bGUmIHN0eWxlKSBjb25z dAogICAgICAgICB9CiAKICAgICAgICAgLy8gTWFrZSBzdXJlIG91ciB6LWluZGV4IHZhbHVlIGlz IG9ubHkgYXBwbGllZCBpZiB0aGUgb2JqZWN0IGlzIHBvc2l0aW9uZWQuCi0gICAgICAgIHJldHVy biBzdHlsZS5wb3NpdGlvbigpID09IFBvc2l0aW9uVHlwZTo6U3RhdGljICYmICFwYXJlbnRCb3hT dHlsZS5kaXNwbGF5KCkuaXNGbGV4aWJsZU9yR3JpZEZvcm1hdHRpbmdDb250ZXh0Qm94KCk7Cisg ICAgICAgIHJldHVybiBzdHlsZS5wb3NpdGlvbigpID09IFBvc2l0aW9uVHlwZTo6U3RhdGljICYm ICFwYXJlbnRCb3hTdHlsZS5kaXNwbGF5KCkuaXNGbGV4aWJsZUJveEluY2x1ZGluZ0RlcHJlY2F0 ZWRPckdyaWRGb3JtYXR0aW5nQ29udGV4dEJveCgpOwogICAgIH07CiAKICAgICBib29sIGhhc0F1 dG9TcGVjaWZpZWRaSW5kZXggPSBoYXNBdXRvWkluZGV4KHN0eWxlLCBtX3BhcmVudEJveFN0eWxl LCBtX2VsZW1lbnQuZ2V0KCkpOwpkaWZmIC0tZ2l0IGEvTGF5b3V0VGVzdHMvaW1wb3J0ZWQvdzNj L3dlYi1wbGF0Zm9ybS10ZXN0cy9jb21wYXQvd2Via2l0LWJveC16LWluZGV4LWV4cGVjdGVkLmh0 bWwgYi9MYXlvdXRUZXN0cy9pbXBvcnRlZC93M2Mvd2ViLXBsYXRmb3JtLXRlc3RzL2NvbXBhdC93 ZWJraXQtYm94LXotaW5kZXgtZXhwZWN0ZWQuaHRtbApuZXcgZmlsZSBtb2RlIDEwMDY0NAppbmRl eCAwMDAwMDAwMDAwMDAuLmZiZWFiZTc0NGQ3ZAotLS0gL2Rldi9udWxsCisrKyBiL0xheW91dFRl c3RzL2ltcG9ydGVkL3czYy93ZWItcGxhdGZvcm0tdGVzdHMvY29tcGF0L3dlYmtpdC1ib3gtei1p bmRleC1leHBlY3RlZC5odG1sCkBAIC0wLDAgKzEsMiBAQAorPCFET0NUWVBFIGh0bWw+Cis8ZGl2 IHN0eWxlPSJ3aWR0aDogMTAwcHg7IGhlaWdodDogMTAwcHg7IGJhY2tncm91bmQ6IGdyZWVuOyI+ PC9kaXY+ClwgTm8gbmV3bGluZSBhdCBlbmQgb2YgZmlsZQpkaWZmIC0tZ2l0IGEvTGF5b3V0VGVz dHMvaW1wb3J0ZWQvdzNjL3dlYi1wbGF0Zm9ybS10ZXN0cy9jb21wYXQvd2Via2l0LWJveC16LWlu ZGV4Lmh0bWwgYi9MYXlvdXRUZXN0cy9pbXBvcnRlZC93M2Mvd2ViLXBsYXRmb3JtLXRlc3RzL2Nv bXBhdC93ZWJraXQtYm94LXotaW5kZXguaHRtbApuZXcgZmlsZSBtb2RlIDEwMDY0NAppbmRleCAw MDAwMDAwMDAwMDAuLmZlMjNkMWU4OTgzNgotLS0gL2Rldi9udWxsCisrKyBiL0xheW91dFRlc3Rz L2ltcG9ydGVkL3czYy93ZWItcGxhdGZvcm0tdGVzdHMvY29tcGF0L3dlYmtpdC1ib3gtei1pbmRl eC5odG1sCkBAIC0wLDAgKzEsNyBAQAorPCFET0NUWVBFIGh0bWw+Cis8bGluayByZWw9ImhlbHAi IGhyZWY9Imh0dHBzOi8vY29tcGF0LnNwZWMud2hhdHdnLm9yZy8jdmFsZGVmLWZsZXgtLXdlYmtp dC1ib3giPgorPGxpbmsgcmVsPSJtYXRjaCIgaHJlZj0iZ3JlZW4tcmVmLmh0bWwiPgorPGRpdiBz dHlsZT0iZGlzcGxheTogLXdlYmtpdC1ib3g7IHdpZHRoOiAxMDBweDsgaGVpZ2h0OiAxMDBweDsi PgorICA8ZGl2IHN0eWxlPSJiYWNrZ3JvdW5kOiBncmVlbjsgbWluLXdpZHRoOiAxMDAlOyB6LWlu ZGV4OiAxOyI+PC9kaXY+CisgIDxkaXYgc3R5bGU9ImJhY2tncm91bmQ6IHJlZDsgbWluLXdpZHRo OiAxMDAlOyBtYXJnaW4tbGVmdDogLTEwMCU7Ij48L2Rpdj4KKzwvZGl2Pgo=