Bug 251754

Summary: Weird temporarily artifacts on over scrolling
Product: WebKit Reporter: Ebrahim Byagowi <ebrahim>
Component: Layout and RenderingAssignee: Nobody <webkit-unassigned>
Status: RESOLVED CONFIGURATION CHANGED    
Severity: Normal CC: bfulgham, mmaxfield, simon.fraser, webkit-bug-importer, zalan
Priority: P2 Keywords: InRadar
Version: Safari Technology Preview   
Hardware: Unspecified   
OS: Unspecified   
Attachments:
Description Flags
weird temporarily artifacts
none
Artifacts
none
resize and scroll none

Ebrahim Byagowi
Reported 2023-02-05 02:59:37 PST
Created attachment 464848 [details] weird temporarily artifacts Happens in both WebKit (6c4c9810) and Safari 16.2, 1. Open https://codepen.io/jh3y/pen/VwBgPxP 2. Scroll down and up, fast and slowly, like what is shown in the attachment. Actual: Weird artifacts will be seen sometimes specially when top overscroll happens. Expected: Like Chrome and Firefox I saw this codepen from this tweet, https://twitter.com/jh3yy/status/1621564942175322112
Attachments
weird temporarily artifacts (2.57 MB, video/quicktime)
2023-02-05 02:59 PST, Ebrahim Byagowi 		no flags
Details
Artifacts (1.08 MB, video/quicktime)
2023-02-05 03:48 PST, Ebrahim Byagowi 		no flags
Details
resize and scroll (9.20 MB, video/quicktime)
2023-02-05 07:02 PST, alan 		no flags
Details
View All Add attachment proposed patch, testcase, etc.
Ebrahim Byagowi
Comment 1 2023-02-05 03:48:07 PST
Created attachment 464849 [details] Artifacts Something similar also happen while scrolling of https://meodai.github.io/poline/ only in Safari and not Chrome and Firefox on an M1 MacBook Pro.
alan
Comment 2 2023-02-05 07:02:16 PST
Created attachment 464851 [details] resize and scroll I wasn't able to reproduce it but resizing the content frame makes the gallery move off center while it jumps right back soon after I star scrolling -(which looks very similar to what the attached "artifact" recording shows with the misplaced content). Firefox seems to always center the content.
Radar WebKit Bug Importer
Comment 3 2023-02-05 08:55:58 PST
<rdar://problem/105058470>
Ebrahim Byagowi
Comment 4 2024-09-20 00:36:42 PDT
I no longer see much an issue here. Guess some driver or graphic layer fixes has happened which is great. Thanks
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