Bug 238127

Summary: Sticky positioned element inside grid has incorrect z order
Product: WebKit Reporter: Andrey Moiseev <moiseev.andy>
Component: CSSAssignee: Nobody <webkit-unassigned>
Status: RESOLVED FIXED    
Severity: Critical CC: kiet.ho, simon.fraser, webkit-bug-importer
Priority: P2 Keywords: InRadar
Version: Safari 15   
Hardware: All   
OS: macOS 10.15   
Attachments:
Description Flags
minimal html
none
video none

Andrey Moiseev
Reported 2022-03-20 09:09:44 PDT
Created attachment 455198 [details] minimal html Sticky positioned element inside grid rendered above its siblings on scroll, in-spite of being the first child in DOM, and placed in a first row of the grid container. Works as expected in google chrome. Notes: - height of grid elements are auto; - if you set top:10px for the sticky positioned element it will rendered underneath the second child, but still above others when you scroll Safari 15.3 iOS 15
Attachments
minimal html (1.30 KB, text/html)
2022-03-20 09:09 PDT, Andrey Moiseev 		no flags
Details
video (12.93 MB, video/quicktime)
2022-03-20 09:11 PDT, Andrey Moiseev 		no flags
Details
View All Add attachment proposed patch, testcase, etc.
Andrey Moiseev
Comment 1 2022-03-20 09:11:29 PDT
Created attachment 455199 [details] video Video
Radar WebKit Bug Importer
Comment 2 2022-03-21 22:20:41 PDT
<rdar://problem/90613929>
Andrey Moiseev
Comment 3 2023-12-17 04:12:22 PST
Hi guys, is there any update regarding this bug? I rise it to critical. I work at Wix.com, all layout of Wix sites is based on css grid, and this bug prevent us to use sticky position layout on Safari browsers, which creates very significant feature parity between Chrome and Safari browsers. Is it possible to fix this bug please?
Simon Fraser (smfr)
Comment 4 2025-07-07 08:52:03 PDT
https://github.com/WebKit/WebKit/pull/46930
Simon Fraser (smfr)
Comment 5 2025-07-07 08:52:35 PDT
<rdar://90572595>
EWS
Comment 6 2025-07-14 10:58:57 PDT
Committed 297346@main (1d76bd02c232): <https://commits.webkit.org/297346@main> Reviewed commits have been landed. Closing PR #46930 and removing active labels.
Kiet Ho
Comment 7 2025-10-17 17:25:05 PDT
*** Bug 294643 has been marked as a duplicate of this bug. ***
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