Bug 200334 - [Async overflow scrolling] overflow:hidden fails to clip transformed descendant inside overflow:scroll
Summary: [Async overflow scrolling] overflow:hidden fails to clip transformed descenda...
Status: NEW
Alias: None
Product: WebKit
Classification: Unclassified
Component: Compositing (show other bugs)
Version: WebKit Nightly Build
Hardware: Unspecified Unspecified
: P2 Normal
Assignee: Nobody
URL:
Keywords:
Depends on:
Blocks:
 
Reported: 2019-07-31 21:35 PDT by Simon Fraser (smfr)
Modified: 2022-07-14 20:37 PDT (History)
4 users (show)

See Also:

Attachments
Testcase (1.43 KB, text/html)
2019-07-31 21:35 PDT, Simon Fraser (smfr) 		no flags Details
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Description Simon Fraser (smfr) 2019-07-31 21:35:10 PDT 
Created attachment 375291 [details]
Testcase

Testcase shows a bug where the overflow:hidden fails to clip.
Comment 1 Simon Fraser (smfr) 2019-07-31 21:38:26 PDT 
Looks like a combination of backing-sharing, transforms and overflow:hidden.
Comment 2 Fujii Hironori 2022-07-14 20:37:43 PDT 
This is an Async Overflow Scrolling issue.
Mac WK1, AppleWin and WinCairo don't have this issue because they don't use Async Overflow Scrolling.
Disabling Async Overflow Scrolling Internal Feature setting of MiniBrowser can work around the issue.