RESOLVED FIXED315370
Dots for photo galleries on lemonde.fr repaint incorrectly with zoom 
https://bugs.webkit.org/show_bug.cgi?id=315370
Summary Dots for photo galleries on lemonde.fr repaint incorrectly with zoom
Simon Fraser (smfr)
Reported 2026-05-22 11:18:44 PDT
There's a repaint bug on the dots in photo galleries on lemonde.fr.
Attachments
Add attachment proposed patch, testcase, etc.
Simon Fraser (smfr)
Comment 1 2026-05-22 11:18:56 PDT
<rdar://176665892>
Simon Fraser (smfr)
Comment 2 2026-05-22 11:19:04 PDT
There are two variants of the repaint bug here. Both involve a renderer gaining a RenderLayer as the same time as its size changing and failing to repaint the old state. One occurs when the new state involves compositing; there’s a repaint failure in RenderLayerCompositor::updateExplicitBacking() there. The other is reproducible when disabling compositing for opacity animations; that will require a fix in RenderLayerModelObject::styleDidChange() or related code.
Simon Fraser (smfr)
Comment 3 2026-05-22 11:28:55 PDT
Pull request: https://github.com/WebKit/WebKit/pull/65491
EWS
Comment 4 2026-05-28 08:32:41 PDT
Committed 314039@main (5885f16b5d2d): <https://commits.webkit.org/314039@main> Reviewed commits have been landed. Closing PR #65491 and removing active labels.
Note You need to log in before you can comment on or make changes to this bug.