235245 2022-01-14 12:27:01 -0800 [Web Inspector] JS-originated animations do not show in the timeline 2022-01-21 12:27:20 -0800 1 1 1 Unclassified WebKit Web Inspector WebKit Nightly Build Unspecified Unspecified NEW InRadar P2 Normal --- 1 graouts webkit-unassigned inspector-bugzilla-changes webkit-bug-importer oldest_to_newest 1831014 0 449205 graouts 2022-01-14 12:27:01 -0800 Created attachment 449205 Test If you open the attached test in Safari, open the Web Inspector and turn on the "Media & Animations" timeline, you'll notice that only 3 out of 4 animations in that file are showing in the timeline. It appears that JS-originated animations, created using the Web Animations API, are not displayed. 1832844 1 webkit-bug-importer 2022-01-21 12:27:20 -0800 <rdar://problem/87897398> 449205 2022-01-14 12:27:01 -0800 2022-01-14 12:27:01 -0800 Test pseudo-element-animation.html text/html 659 graouts PHN0eWxlPgoKZGl2OjpiZWZvcmUgewogICAgY29udGVudDogIkhlbGxvIjsKICAgIGFuaW1hdGlv bjogY29sb3ItYW5pbWF0aW9uIDFzIGxpbmVhciBpbmZpbml0ZTsKfQoKQGtleWZyYW1lcyBjb2xv ci1hbmltYXRpb24gewogICAgZnJvbSB7IGNvbG9yOiByZWQgfQogICAgdG8geyBjb2xvcjogYmx1 ZSB9Cn0KCmRpdjo6YWZ0ZXIgewogICAgY29udGVudDogIiB3b3JsZCEiOwp9CgpsaSB7CiAgICBs aXN0LXN0eWxlLXR5cGU6IGRlY2ltYWw7CiAgICBhbmltYXRpb246IG1hcmdpbi1sZWZ0LWFuaW1h dGlvbiAycyBsaW5lYXIgaW5maW5pdGU7Cn0KCkBrZXlmcmFtZXMgbWFyZ2luLWxlZnQtYW5pbWF0 aW9uIHsKICAgIDUwJSB7IG1hcmdpbi1sZWZ0OiA1MHB4IH0KfQoKbGk6Om1hcmtlciB7CiAgICBj b2xvcjogYmx1ZTsKICAgIGFuaW1hdGlvbjogY29sb3ItYW5pbWF0aW9uIDFzIGxpbmVhciBpbmZp bml0ZTsKfQoKPC9zdHlsZT4KPGRpdj48L2Rpdj4KPG9sPgo8bGk+Rm9vPC9saT4KPG9sPgo8c2Ny aXB0PgoKZG9jdW1lbnQucXVlcnlTZWxlY3RvcigiZGl2IikuYW5pbWF0ZSh7ICJjb2xvciI6IFsi Z3JlZW4iLCAieWVsbG93Il0gfSwgeyBwc2V1ZG9FbGVtZW50OiAiOjphZnRlciIsIGlkOiAiZm9v IiwgZHVyYXRpb246IDEwMDAgfSk7Cgo8L3NjcmlwdD4=