GUI version may crash due to OpenTK problems under Windows 10

[MarkusMaal]

If Win32RenderingMode.Wgl is set, System.ExecutionEngineException in OpenTK.Graphics.dll gets thrown when doing specific render operations during runtime. The app will not auto-restart.

Steps to reproduce:

1. Run FlipnicFileTooGUI.exe under Windows 10
2. Click on "About"
3. Wait 5 seconds
4. Click on "OK"

Message: Exception of type 'System.ExecutionEngineException' was thrown.

Stack trace: null

Call stack:

• SkiaSharp.dll!SkiaSharp.SKObject.DisposeNative() Line 13 (C#)
• SkiaSharp.dll!SkiaSharp.SKNativeObject.Dispose(bool disposing) Line 59 (C#)
• SkiaSharp.dll!SkiaSharp.SKImage.Dispose(bool disposing) Line 38 (C#)
• SkiaSharp.dll!SkiaSharp.SKNativeObject.~SKNativeObject() Line 34 (C#)
• System.Private.CoreLib.dll!System.GC.RunFinalizers() (Unknown)

Testing done so far:

• Can't reproduce the issue in a VMware Workstation virtual machine
• Can't reproduce the issue with a Windows on ARM device
• Was able to reproduce the issue on 2 separate Windows 10 devices that run it natively
• Was able to reproduce the issue on a QEMU virtual machine with GPU passthrough