RESOLVED FIXED 259741
REGRESSION - Multiple sequenced animations of the same property do not work 
https://bugs.webkit.org/show_bug.cgi?id=259741
Summary REGRESSION - Multiple sequenced animations of the same property do not work
Lukasz Nawrot
Reported 2023-08-02 11:19:05 PDT
When adding two subsequent animations of the same property (in my case 'transform'), the first one is not behaving correctly (jumps a little and comes back to the starting position). See codepen with minimal repro: https://codepen.io/wookie123/pen/zYMerWP (it should translate right, wait 1s and translate further) It works as expected on Chrome and Safari 16.3. It fails on Safari 17 on both MacOS (19616.1.24.11.3) and iOS (21A5291g).
Attachments
iOS 17 recording (4.69 MB, video/mp4)
2023-08-05 00:18 PDT, Lukasz Nawrot 		no flags
Details
MacOS Safari 17 (618.70 KB, video/mp4)
2023-08-05 00:19 PDT, Lukasz Nawrot 		no flags
Details
expected (299.41 KB, video/mp4)
2023-08-05 00:36 PDT, Lukasz Nawrot 		no flags
Details
View All Add attachment proposed patch, testcase, etc.
Radar WebKit Bug Importer
Comment 1 2023-08-02 19:27:42 PDT
<rdar://problem/113306184>
stephen_cobb
Comment 2 2023-08-04 15:08:58 PDT
Hi Lukasz, thanks for your report. I don't seem to be able to reproduce this using Safari 16.5 or Safari 17.0. Could you please attach a screen recording of the bad animation?
Lukasz Nawrot
Comment 3 2023-08-05 00:18:43 PDT
Created attachment 467202 [details] iOS 17 recording
Lukasz Nawrot
Comment 4 2023-08-05 00:19:55 PDT
Created attachment 467203 [details] MacOS Safari 17
Lukasz Nawrot
Comment 5 2023-08-05 00:36:12 PDT
Created attachment 467204 [details] expected
Lukasz Nawrot
Comment 6 2023-08-05 01:38:00 PDT
Just checked and it works as expected on Safari 16.5, it seems that the problem is only on Safari 17.0. Let me know if you need any additional information from me
Ahmad Saleem
Comment 7 2023-08-07 02:16:59 PDT
I am not able to reproduce this in Safari Technology Preview 175 and WebKit ToT (266624@main). It might be something broken in between Safari 16.x and Safari 17 but then got fixed.
Lukasz Nawrot
Comment 8 2023-08-10 11:32:24 PDT
Checked on the latest iOS beta and Safari Tech Preview 175 and it seems to work. Thanks!
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