Bug 289911

Summary: Implement "smart" alignment safety for absolutely positioned boxes
Product: WebKit Reporter: fantasai <fantasai.bugs>
Component: New BugsAssignee: fantasai <fantasai.bugs>
Status: RESOLVED FIXED    
Severity: Normal CC: kiet.ho, webkit-bug-importer
Priority: P2 Keywords: InRadar
Version: WebKit Local Build   
Hardware: Unspecified   
OS: Unspecified   
URL: https://www.w3.org/TR/css-align-3/#auto-safety-position
Bug Depends on: 288531    
Bug Blocks: 291856    

fantasai
Reported 2025-03-17 13:01:34 PDT
CSS Box Alignment introduced some overflow rules for non-normal-aligned absolutely positioned boxes to allow these boxes to overflow their inset-modified containing block while trying to stay within the original containing block. We need to implement these rules. https://www.w3.org/TR/css-align-3/#auto-safety-position
Attachments
Radar WebKit Bug Importer
Comment 1 2025-03-17 13:02:44 PDT
fantasai
Comment 2 2025-03-20 23:16:31 PDT
EWS
Comment 3 2025-03-21 13:14:51 PDT
Committed 292501@main (bcd02c50969f): <https://commits.webkit.org/292501@main> Reviewed commits have been landed. Closing PR #42796 and removing active labels.
Antti Koivisto
Comment 4 2025-03-26 02:50:38 PDT
*** Bug 289577 has been marked as a duplicate of this bug. ***
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