Bug 312399

Summary: [Site Isolation] Validation message bubble is positioned incorrectly in cross-origin iframes
Product: WebKit Reporter: zak ridouh <zakr>
Component: New BugsAssignee: zak ridouh <zakr>
Status: RESOLVED FIXED    
Severity: Normal CC: webkit-bug-importer
Priority: P2 Keywords: InRadar
Version: WebKit Nightly Build   
Hardware: Unspecified   
OS: Unspecified   

zak ridouh
Reported 2026-04-15 11:55:17 PDT
When site isolation is enabled, form validation bubbles triggered from elements inside cross-origin iframes appear at the wrong position. The anchor rect sent via ShowValidationMessage IPC is in subframe coordinates, but the UIProcess treats it as main-frame coordinates. This is the same class of bug I previously fixed for color pickers, datalist suggestions, and datetime pickers.
Attachments
Radar WebKit Bug Importer
Comment 1 2026-04-15 11:55:23 PDT
zak ridouh
Comment 2 2026-04-15 12:09:59 PDT
EWS
Comment 3 2026-05-15 12:49:12 PDT
Committed 313326@main (4221343a3e61): <https://commits.webkit.org/313326@main> Reviewed commits have been landed. Closing PR #62839 and removing active labels.
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