Bug 299854

Summary: Multicol spanners should not paint below the rest of the multicol content
Product: WebKit Reporter: fantasai <fantasai.bugs>
Component: Layout and RenderingAssignee: Nobody <webkit-unassigned>
Status: NEW    
Severity: Normal CC: bfulgham, karlcow, simon.fraser, webkit-bug-importer, zalan
Priority: P2 Keywords: InRadar
Version: WebKit Local Build   
Hardware: Unspecified   
OS: Unspecified   

fantasai
Reported 2025-09-29 21:48:14 PDT
We're failing tests like https://wpt.live/css/css-multicol/multicol-span-all-005.html because we're painting the spanner below the multicol itself and below all its other contents (including content that comes before). AFAICT we're painting 1. the multicol background 2. the spanners, including their background, border, and content 3. the multicol borders 4. all other multicol content, including their background border, and content This seems wrong... I'm pretty sure the spanners should be painted interleaved with other multicol content, and certainly not before the multicol border!
Attachments
Radar WebKit Bug Importer
Comment 1 2025-10-06 21:49:12 PDT
Radar WebKit Bug Importer
Comment 2 2025-10-06 21:49:15 PDT
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