Bug 229999

Summary: position: absolute child of transformed containing block not clipped by overflow: auto
Product: WebKit Reporter: Martin Robinson <mrobinson>
Component: CSSAssignee: Nobody <webkit-unassigned>
Status: RESOLVED DUPLICATE    
Severity: Normal CC: Hironori.Fujii, webkit-bug-importer
Priority: P2 Keywords: InRadar
Version: WebKit Nightly Build   
Hardware: Unspecified   
OS: Unspecified   
See Also: https://bugs.webkit.org/show_bug.cgi?id=241641
Attachments:
Description Flags
Test case
none
Image showing failure
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PDF exported by Safari TP 133 none

Description Martin Robinson 2021-09-07 07:39:41 PDT
Created attachment 437499 [details]
Test case

In the attached test case, the position: absolute child is not clipped by its containing block (a transformed div with overflow: auto) and instead spills out of the bounds of this element.
Comment 1 Martin Robinson 2021-09-07 07:41:10 PDT
Created attachment 437500 [details]
Image showing failure
Comment 2 Radar WebKit Bug Importer 2021-09-14 07:40:42 PDT
<rdar://problem/83101942>
Comment 3 Martin Robinson 2021-10-25 07:06:26 PDT
I'm still able to reproduce this, but I'm currently only seeing it on WebKitGTK and not the Mac port.
Comment 4 Fujii Hironori 2021-10-25 18:42:00 PDT
WinCairo is also having this issue even with disabling Accelerated Compositing.
Cairo clipping bug?
Comment 5 Fujii Hironori 2021-10-25 19:39:40 PDT
Mac MiniBrowser WK1 Window is also having this issue.
Comment 6 Fujii Hironori 2021-10-25 21:14:51 PDT
Created attachment 442461 [details]
PDF exported by Safari TP 133

It can be observed by using "Export as PDF" of Safari.
Comment 7 Fujii Hironori 2022-07-12 13:03:04 PDT

*** This bug has been marked as a duplicate of bug 241641 ***