[Webkit-unassigned] [Bug 248827] New: REGRESSION (253865 at main): Crashes under RenderLayerCompositor::updateScrollingNodeForViewportConstrainedRole

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=248827

            Bug ID: 248827
           Summary: REGRESSION (253865 at main): Crashes under
                    RenderLayerCompositor::updateScrollingNodeForViewportC
                    onstrainedRole
           Product: WebKit
           Version: WebKit Nightly Build
          Hardware: Unspecified
                OS: Unspecified
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: Compositing
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: simon.fraser at apple.com
                CC: simon.fraser at apple.com

253865 at main introduced a cluster of crashes where, under RenderLayerCompositor::updateScrollingNodeForViewportConstrainedRole(), a fixed or sticky layer would have a null viewportAnchorLayer().

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