Bug 299939

Summary: fixed positioned elements not rendered in RTL/vertical-rl
Product: WebKit Reporter: Kiet Ho <kiet.ho>
Component: CSSAssignee: Simon Fraser (smfr) <simon.fraser>
Status: RESOLVED FIXED    
Severity: Normal CC: fantasai.bugs, kiet.ho, koivisto, simon.fraser, webkit-bug-importer, zalan
Priority: P2 Keywords: InRadar
Version: WebKit Nightly Build   
Hardware: Unspecified   
OS: Unspecified   
Attachments:
Description Flags
testcase none

Kiet Ho
Reported 2025-10-01 00:12:40 PDT
css/css-anchor-position/anchor-scroll-position-try-007.html seems to fully pass... except that the anchor positioned element isn't rendered at all. anchor() functions still resolve to the correct value though. It looks to be a vertical-rl issue - if the html { writing-mode: vertical-rl; } is removed, then the anchored element does render. Maybe a repaint issue?
Attachments
testcase (693 bytes, text/html)
2025-10-08 13:25 PDT, fantasai 		no flags
Details
View All Add attachment proposed patch, testcase, etc.
Radar WebKit Bug Importer
Comment 1 2025-10-01 00:12:49 PDT
<rdar://problem/161712734>
fantasai
Comment 2 2025-10-08 13:25:26 PDT
Created attachment 477030 [details] testcase This seems to be a general problem with fixed positioning and RTL-direction scrolling... see this testcase, for example.
Simon Fraser (smfr)
Comment 3 2025-10-31 14:07:36 PDT
Pull request: https://github.com/WebKit/WebKit/pull/53272
EWS
Comment 4 2025-11-04 07:58:25 PST
Committed 302542@main (6fe328a9c8a4): <https://commits.webkit.org/302542@main> Reviewed commits have been landed. Closing PR #53272 and removing active labels.
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