Bug 213504

Summary: REGRESSION (iOS 14) Transition animations slower than iOS 13
Product: WebKit Reporter: Niklas Merz <niklasmerz>
Component: AnimationsAssignee: Nobody <webkit-unassigned>
Status: RESOLVED DUPLICATE    
Severity: Normal CC: dino
Priority: P2 Keywords: PerfRegression
Version: Safari Technology Preview   
Hardware: iPhone / iPad   
OS: Other   
URL: https://ios-repro.web.app/list
See Also: https://bugs.webkit.org/show_bug.cgi?id=201048
Attachments:
Description Flags
Comparison running on iOS 13 and 14.
none
iOS 14
none
iOS 13 none

Description Niklas Merz 2020-06-23 02:13:31 PDT 
Created attachment 402540 [details]
Comparison running on iOS 13 and 14.

I just tested a web app with the brand new iOS 14 developer beta. The page transitions are noticeably slower then we are used to with iOS 13.

See a repro app on https://ios-repro.web.app/list and the videos attached.

The issue is similar but not exactly the same as a bug in iOS 13: https://bugs.webkit.org/show_bug.cgi?id=201048
Comment 1 Niklas Merz 2020-06-23 02:15:33 PDT 
Created attachment 402541 [details]
iOS 14
Comment 2 Niklas Merz 2020-06-23 02:15:56 PDT 
Created attachment 402542 [details]
iOS 13
Comment 3 Niklas Merz 2020-06-23 06:47:40 PDT 
Sorry this has already been reported with a good reproduction.

This is a duplicate of https://bugs.webkit.org/show_bug.cgi?id=213495

*** This bug has been marked as a duplicate of bug 213495 ***