[Webkit-unassigned] [Bug 253010] New: Starting iPadOS 16.4 beta WKWebView content process crashes in split screen

bugzilla-daemon at webkit.org bugzilla-daemon at webkit.org
Mon Feb 27 11:21:44 PST 2023


https://bugs.webkit.org/show_bug.cgi?id=253010

            Bug ID: 253010
           Summary: Starting iPadOS 16.4 beta WKWebView content process
                    crashes in split screen
           Product: WebKit
           Version: Other
          Hardware: iPhone / iPad
                OS: iOS 16
            Status: NEW
          Severity: Critical
          Priority: P2
         Component: WebKit Misc.
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: erezg at microsoft.com

The only repro we have is within the Power BI app.

Console logs:
fault   20:40:39.907552+0200    Power BI        /Library/Caches/com.apple.xbs/Sources/WebKit_Sim/Source/WebKit/UIProcess/RemoteLayerTree/ios/RemoteScrollingCoordinatorProxyIOS.mm 224: Invalid message dispatched virtual void WebKit::RemoteScrollingCoordinatorProxyIOS::establishLayerTreeScrollingRelations(const WebKit::RemoteLayerTreeHost &)
fault   20:40:39.908104+0200    Power BI        Received an invalid message 'RemoteLayerTreeDrawingAreaProxy_CommitLayerTree' from the WebContent process.
default 20:40:39.908282+0200    Power BI        AuxiliaryProcessProxy::terminate: PID=54762
error   20:40:39.909432+0200    Power BI        0x14b0748b0 - [PID=54762] WebProcessProxy::didClose: (web process 54762 crash)

Repro steps:
- Install the Power BI app from the App Store on an iPad with iPadOS 16.4 beta.
- Login with:
  Username: webkit-repro at erezoneoutlook.onmicrosoft.com
  Password: PowerBI!2
- Enter split screen (for example - bring the Safari app to the right)
- Open the "Test" report that appears on the Home page in the Power BI app
- Observe the crash

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