290772 2025-03-31 10:37:32 -0700 [web-animations] animation events do not get fired if relevant event listeners are added dynamically after they are enqueued 2025-04-03 22:38:17 -0700 1 1 1 Unclassified WebKit Animations WebKit Nightly Build Unspecified Unspecified RESOLVED FIXED https://github.com/web-platform-tests/wpt/pull/51828 InRadar P2 Normal --- 290836 290993 1 graouts graouts graouts karlcow webkit-bug-importer oldest_to_newest 2107460 0 474773 graouts 2025-03-31 10:37:32 -0700 Created attachment 474773 Test The attached test case adds `finish` and `cancel` events after a `finished` promise has resolved and the `cancel()` method was called on the finished animation. Due to the asynchronous nature of animation events, which are first enqueued and later dispatched in one batch, and our optimization where only events with registered event listeners are enqueued (see 262123@main), we fail to dispatch the expected events. This also affects Chrome, though I'm not sure this is for the same reason. 2107463 1 graouts 2025-03-31 10:42:45 -0700 Filed a similar bug on Chrome: https://issues.chromium.org/issues/407497938. This works as expected in Firefox. 2108482 2 graouts 2025-04-03 05:45:26 -0700 Pull request: https://github.com/WebKit/WebKit/pull/43536 2108483 3 graouts 2025-04-03 05:45:52 -0700 Submitted web-platform-tests pull request: https://github.com/web-platform-tests/wpt/pull/51828 2108783 4 graouts 2025-04-03 22:34:37 -0700 *** Bug 290836 has been marked as a duplicate of this bug. *** 2108784 5 ews-feeder 2025-04-03 22:37:29 -0700 Committed 293217@main (fdfe5c907393): <https://commits.webkit.org/293217@main> Reviewed commits have been landed. Closing PR #43536 and removing active labels. 2108785 6 webkit-bug-importer 2025-04-03 22:38:17 -0700 <rdar://problem/148572720> 474773 2025-03-31 10:37:32 -0700 2025-03-31 10:37:32 -0700 Test dynamic-finish-and-cancel-event.html text/html 1952 graouts PCFET0NUWVBFIGh0bWw+CjxodG1sIGxhbmc9ImVuIj4KPGhlYWQ+CiAgICA8bWV0YSBjaGFyc2V0 PSJ1dGYtOCI+CiAgICA8bWV0YSBodHRwLWVxdWl2PSJ4LXVhLWNvbXBhdGlibGUiIGNvbnRlbnQ9 ImllPWVkZ2UiPgogICAgPG1ldGEgbmFtZT0idmlld3BvcnQiIGNvbnRlbnQ9IndpZHRoPWRldmlj ZS13aWR0aCwgaW5pdGlhbC1zY2FsZT0xLCBzaHJpbmstdG8tZml0PW5vIj4KICAgIDx0aXRsZT48 L3RpdGxlPgogICAgPHN0eWxlPgoKI3RhcmdldCB7CiAgICB3aWR0aDogMTAwcHg7CiAgICBoZWln aHQ6IDEwMHB4OwogICAgYmFja2dyb3VuZC1jb2xvcjogYmxhY2s7Cn0KCiAgICA8L3N0eWxlPgo8 L2hlYWQ+Cjxib2R5PgoKPGRpdiBpZD0idGFyZ2V0Ij48L2Rpdj4KCjxzY3JpcHQ+CgooYXN5bmMg ZnVuY3Rpb24oKSB7CiAgICBhd2FpdCBuZXcgUHJvbWlzZShyZXF1ZXN0QW5pbWF0aW9uRnJhbWUp OwoKICAgIGNvbnN0IGFuaW1hdGlvbiA9IHRhcmdldC5hbmltYXRlKHsgbWFyZ2luTGVmdDogIjEw MHB4IiB9LCAxMDApOwoKICAgIC8vIFRoZSAiZmluaXNoZWQiIHByb21pc2Ugd2lsbCBiZSByZXNv bHZlZCB3aGVuIHRoZSB0aW1lbGluZSBhZHZhbmNlcyB0byBhIHRpbWUKICAgIC8vIHBhc3QgMTAw bXMgb2YgdGhlIGFuaW1hdGlvbiBzdGFydCB0aW1lLiBUaGlzIGhhcHBlbnMgYXMgc3RlcCAxIG9m IHRoZQogICAgLy8gInVwZGF0ZSBhbmltYXRpb25zIGFuZCBzZW5kIGV2ZW50cyIgcHJvY2VkdXJl LiBBIGBmaW5pc2hgIGV2ZW50IHdpbGwgYWxzbwogICAgLy8gYmUgZW5xdWV1ZWQuCiAgICAvLyBo dHRwczovL2RyYWZ0cy5jc3N3Zy5vcmcvd2ViLWFuaW1hdGlvbnMtMS8jdXBkYXRlLWFuaW1hdGlv bnMtYW5kLXNlbmQtZXZlbnRzCiAgICBhd2FpdCBhbmltYXRpb24uZmluaXNoZWQ7CiAgICAKICAg IC8vIFRoaXMgSlMgY29kZSBydW5zIGR1cmluZyBzdGVwIDMgb2YgdGhlICJ1cGRhdGUgYW5pbWF0 aW9ucyBhbmQgc2VuZCBldmVudHMiCiAgICAvLyBwcm9jZWR1cmUgd2hlbiBhIG1pY3JvdGFzayBj aGVja3BvaW50IGlzIHBlcmZvcm1lZC4gQ2FsbGluZyBgY2FuY2VsKClgIHdpbGwKICAgIC8vIGVu cXVldWUgYSBgY2FuY2VsYCBldmVudC4KICAgIGFuaW1hdGlvbi5jYW5jZWwoKTsKCiAgICAvLyBX ZSdsbCBub3cgYWRkIGBmaW5pc2hgIGFuZCBgY2FuY2VsYCBldmVudCBsaXN0ZW5lcnMuIEF0IHRo aXMgc3RhZ2UsIHRoZSBldmVudHMKICAgIC8vIHdpbGwgaGF2ZSBiZWVuIGVucXVldWVkIGJ1dCBu b3QgZmlyZWQgeWV0LCBhcyB0aGlzIGhhcHBlbnMgaW4gc3RlcCA1IG9mIHRoZSAKICAgIC8vICJ1 cGRhdGUgYW5pbWF0aW9ucyBhbmQgc2VuZCBldmVudHMiIHByb2NlZHVyZS4KICAgIC8vIEluIFNh ZmFyaSBhbmQgQ2hyb21lLCB0aGVzZSBldmVudCBsaXN0ZW5lcnMgd2lsbCBub3QgYmUgZmlyZWQu IEluIEZpcmVmb3ggdGhleSB3aWxsLgogICAgLy8gSGFkIHdlIHJlZ3NpdGVyZWQgdGhvc2UgZXZl bnQgbGlzdGVuZXJzIGR1cmluZyBhbmltYXRpb24gY3JlYXRpb24sIHRoZXkgd291bGQKICAgIC8v IGhhdmUgZ290dGVuIGZpcmVkIGluIGFsbCBicm93c2VycywgaW5kaWNhdGluZyB0aGF0IFNhZmFy aSBhbmQgQ2hyb21lIGxpa2VseQogICAgLy8gaGF2ZSBhbiBvcHRpbWl6YXRpb24gdGhhdCBET00g ZXZlbnRzIGFyZW4ndCBlbnF1ZXVkIGlmIGEgcmVsZXZhbnQgZXZlbnQgbGlzdGVuZXIKICAgIC8v IGlzbid0IHJlZ2lzdGVyZWQuCiAgICBjb25zdCBoYW5kbGVFdmVudCA9IGV2ZW50ID0+IGNvbnNv bGUubG9nKGBHb3QgJyR7ZXZlbnQudHlwZX0nIGV2ZW50YCk7CiAgICBhbmltYXRpb24uYWRkRXZl bnRMaXN0ZW5lcigiZmluaXNoIiwgaGFuZGxlRXZlbnQpOwogICAgYW5pbWF0aW9uLmFkZEV2ZW50 TGlzdGVuZXIoImNhbmNlbCIsIGhhbmRsZUV2ZW50KTsKfSkoKTsKCjwvc2NyaXB0PgogIAo8L2Jv ZHk+CjwvaHRtbD4KCgo=