[Webkit-unassigned] [Bug 255353] New: REGRESSION (262767 at main): [Ventura] ASSERTION FAILED: !layerTreeContext.isEmpty() seen with LockdownMode API tests

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=255353

            Bug ID: 255353
           Summary: REGRESSION (262767 at main): [Ventura] ASSERTION FAILED:
                    !layerTreeContext.isEmpty() seen with LockdownMode API
                    tests
           Product: WebKit
           Version: Other
          Hardware: Unspecified
                OS: Unspecified
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: WebKit Misc.
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: ryanhaddad at apple.com
                CC: pvollan at apple.com,
                    webkit-bot-watchers-bugzilla at group.apple.com,
                    webkit-bug-importer at group.apple.com

LockdownMode API tests are asserting on Ventura debug bots after https://commits.webkit.org/262767@main:

        ASSERTION FAILED: !layerTreeContext.isEmpty()
        /Volumes/Data/worker/Apple-Ventura-Debug-Build/build/Source/WebKit/UIProcess/mac/PageClientImplMac.mm(592) : virtual void WebKit::PageClientImpl::enterAcceleratedCompositingMode(const WebKit::LayerTreeContext &)
        1   0x11acf5009 WTFCrash
        2   0x14ced399b WTFCrashWithInfo(int, char const*, char const*, int)
        3   0x14e5fff24 WebKit::PageClientImpl::enterAcceleratedCompositingMode(WebKit::LayerTreeContext const&)
        4   0x14e99b36c WebKit::WebPageProxy::enterAcceleratedCompositingMode(WebKit::LayerTreeContext const&)
        5   0x14e6110d5 WebKit::TiledCoreAnimationDrawingAreaProxy::enterAcceleratedCompositingMode(unsigned long long, WebKit::LayerTreeContext const&)

https://build.webkit.org/#/builders/701/builds/2061/steps/19/logs/stdio

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