211536 2020-05-06 15:17:57 -0700 REGRESSION (r261239): [ Mac Debug WK1 ] fast/events/wheel-event-outside-body.html is crashing 2020-05-06 15:45:16 -0700 1 1 1 Unclassified WebKit New Bugs WebKit Nightly Build Unspecified Unspecified RESOLVED CONFIGURATION CHANGED https://bugs.webkit.org/show_bug.cgi?id=211512 InRadar P2 Normal --- 1 tsavell webkit-unassigned koivisto webkit-bot-watchers-bugzilla webkit-bug-importer oldest_to_newest 1649849 0 tsavell 2020-05-06 15:17:57 -0700 fast/events/wheel-event-outside-body.html This test began crashing after the changes in https://trac.webkit.org/changeset/261239/webkit History: https://results.webkit.org/?suite=layout-tests&test=fast%2Fevents%2Fwheel-event-outside-body.html Log: https://build.webkit.org/results/Apple-Catalina-Debug-WK1-Tests/r261245%20(4385)/fast/events/wheel-event-outside-body-crash-log.txt I am able to reproduce this with command: run-webkit-tests --iterations 2000 --exit-after-n-failures 1 --exit-after-n-crashes-or-timeouts 1 --debug-rwt-logging --no-retry --force --no-build -f -1 --debug fast/events/wheel-event-outside-body.htm 1649851 1 webkit-bug-importer 2020-05-06 15:18:21 -0700 <rdar://problem/62947892> 1649852 2 ryanhaddad 2020-05-06 15:20:24 -0700 SHOULD NEVER BE REACHED ./rendering/RenderLayerBacking.cpp(2948) : void WebCore::RenderLayerBacking::paintIntoLayer(const WebCore::GraphicsLayer *, WebCore::GraphicsContext &, const WebCore::IntRect &, OptionSet<WebCore::PaintBehavior>, WebCore::EventRegionContext *) 1649860 3 ryanhaddad 2020-05-06 15:45:16 -0700 Reverted in https://trac.webkit.org/changeset/261253/webkit