Bug 216066

Summary: [Async overflow scrolling] CSS clip property fails to clip composited descendants of an overflow:scroll
Product: WebKit Reporter: Simon Fraser (smfr) <simon.fraser>
Component: CompositingAssignee: Simon Fraser (smfr) <simon.fraser>
Status: NEW    
Severity: Normal CC: fujii.hironori, simon.fraser, webkit-bug-importer
Priority: P2 Keywords: InRadar
Version: Safari Technology Preview   
Hardware: Unspecified   
OS: Unspecified   
Attachments:
Description Flags
Testcase none

Simon Fraser (smfr)
Reported 2020-09-01 21:04:00 PDT
Created attachment 407740 [details] Testcase Testcase shows an issue where the 'clip' property fails to clip positioned descendants of composited overflow scroll.
Attachments
Testcase (1.94 KB, text/html)
2020-09-01 21:04 PDT, Simon Fraser (smfr) 		no flags
Details
View All Add attachment proposed patch, testcase, etc.
Simon Fraser (smfr)
Comment 1 2020-09-01 21:05:02 PDT
Ancestor clipping stack layers need to look for 'clip'.
Radar WebKit Bug Importer
Comment 2 2020-09-02 20:38:23 PDT
<rdar://problem/68251906>
Fujii Hironori
Comment 3 2022-07-14 19:32:44 PDT
Disabling Async Overflow Scrolling Internal Feature setting of MiniBrowser can work around the issue.
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