Bug 301936

Summary: REGRESSION(301964@main): [GTK] Major performance regression when entering text on Jira
Product: WebKit Reporter: Michael Catanzaro <mcatanzaro>
Component: WebKitGTKAssignee: Nobody <webkit-unassigned>
Status: RESOLVED FIXED    
Severity: Normal CC: bugs-noreply, mcatanzaro, simon.fraser
Priority: P2    
Version: WebKit Nightly Build   
Hardware: PC   
OS: Linux   
See Also: https://bugs.webkit.org/show_bug.cgi?id=301161

Michael Catanzaro
Reported 2025-11-04 07:49:12 PST
Since 301964@main "Batch repaints in non-composited iframes" there is a major performance/rendering regression when entering text into issue reports on https://issues.redhat.com/ using WebKitGTK. The text entry is severely broken. Unfortunately you'll need to create a user account to reproduce the issue.
Attachments
Simon Fraser (smfr)
Comment 1 2025-11-04 08:57:49 PST
That's a bit surprising.
Michael Catanzaro
Comment 2 2025-11-14 08:58:51 PST
This seems to be fixed. Carlos Garcia pointed me to 302899@main where we broke and fixed didCompositeRunLoopObserver, which seems like a good explanation for why "Batch repaints in non-composited iframes" would go awry.
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