WPF app crashes without stacktrace when clicking on a link in PDF file

[abid76]

I have a WPF app using CefSharp.

Since upgrading from CefSharp 132.3.11 to 145.0.260 the WPF app crashes when clicking on a link in a PDF file displayed in a browser instance.

• PDF file: Test-1.pdf
• Cef log: cef-debug.log

The application crashes without a stracktrace, even the cef log does not show anything helpful (at least to me).

When opening the attached PDF file in https://github.com/cefsharp/CefSharp.MinimalExample, the application does not crash.

As the app is quite complex it's currently not possible to provide a minimal example. I am using a custom LifespanHandler, a BrowserRequestHandler and a BrowserResourceRequestHandler. I placed a breakpoint in every handler method, none is hit when clicking on the link.

This is how I initialize Cef:

public static void InitCef()
{
    var cefSettings = new CefSettings()
    {
        LogSeverity = LogSeverity.Verbose,
        CachePath = SystemService.CefCacheDir,
        LogFile = SystemService.GetLogFile(SystemService.CefSharpLogFile),
        Locale = "de-DE",
        // CefCommandLineArgs = { ["disable-gpu-shader-disk-cache"] = "1" } // Ordner GPUCache nicht erstellen
    };
    CefCustomScheme localScheme = new CefCustomScheme
    {
        SchemeName = LocalSchemeHandlerFactory.SchemeNameLocal,
        SchemeHandlerFactory = new LocalSchemeHandlerFactory(),
        IsCSPBypassing = true
    };
    CefCustomScheme smbScheme = new CefCustomScheme
    {
        SchemeName = SmbSchemeHandlerFactory.SchemeNameSmb,
        SchemeHandlerFactory = new SmbSchemeHandlerFactory(),
        IsCSPBypassing = true
    };
    cefSettings.RegisterScheme(localScheme);
    cefSettings.RegisterScheme(smbScheme);
    CefSharp.Cef.Initialize(cefSettings);
}

I'm afraid this is very little information to analyze the problem's cause.

But maybe someone can provide me any hints how to investigate further?

[amaitland]

https://github.com/cefsharp/CefSharp/wiki/Trouble-Shooting#unmanaged-crashes-when-the-process-dies