Bug 259741

Summary:

REGRESSION - Multiple sequenced animations of the same property do not work

Product:

WebKit

Reporter:

Lukasz Nawrot <xrox>

Component:

Animations

Assignee:

Nobody <webkit-unassigned>

Status:

RESOLVED FIXED

Severity:

Normal

CC:

ahmad.saleem792, dino, graouts, stephen_cobb, webkit-bug-importer

Priority:

Keywords:

InRadar

Version:

Safari 17

Hardware:

Other

OS:

Unspecified

Attachments:

Description	Flags
iOS 17 recording	none
MacOS Safari 17	none
expected	none

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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