Anki opens but all windows are blank

Anki Desktop
18

Fascinating. The following error is repeated dozens of times, and does not appear when the qt6 build is launched on my M1 Macbook:


❯ ~ [7m 38s] /Applications/Anki.app/Contents/MacOS/anki           
Anki starting...
Initial setup...
Running with temporary Qt5 compatibility shims.
Run with DISABLE_QT5_COMPAT=1 to confirm compatibility with Qt6.
Preparing to run...
qt.webenginecontext: 

GLImplementation: core_profile
Surface Type: OpenGL
Surface Profile: CoreProfile
Surface Version: 4.1
Using Default SG Backend: yes
Using Software Dynamic GL: no
Using Angle: no

Init Parameters:
  *  application-name Anki 
  *  browser-subprocess-path /Applications/Anki.app/Contents/Frameworks/QtWebEngineCore.framework/Helpers/QtWebEngineProcess.app/Contents/MacOS/QtWebEngineProcess 
  *  disable-features DnsOverHttpsUpgrade,ConsolidatedMovementXY,InstalledApp,BackgroundFetch,WebOTP,WebPayments,WebUSB,PictureInPicture 
  *  disable-speech-api  
  *  enable-features TracingServiceInProcess 
  *  enable-threaded-compositing  
  *  gpu-preferences 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 
  *  in-process-gpu  
  *  use-gl core_profile 

Starting main loop...
[61126:48387:1202/084531.121265:ERROR:gl_context_cgl.cc(115)] Error creating context.
[61126:48387:1202/084531.123325:ERROR:gl_context_cgl.cc(115)] Error creating context.
[61126:48387:1202/084531.123344:ERROR:gpu_channel_manager.cc(771)] ContextResult::kFatalFailure: Failed to create shared context for virtualization.
[61126:48387:1202/084531.123353:ERROR:shared_image_stub.cc(470)] SharedImageStub: unable to create context
[61126:48387:1202/084531.123366:ERROR:gpu_channel.cc(449)] GpuChannel: Failed to create SharedImageStub
[61126:48387:1202/084531.124454:ERROR:gl_context_cgl.cc(115)] Error creating context.
[61126:48387:1202/084531.125649:ERROR:gl_context_cgl.cc(115)] Error creating context.
[61126:48387:1202/084531.125670:ERROR:gpu_channel_manager.cc(771)] ContextResult::kFatalFailure: Failed to create shared context for virtualization.
[61126:48387:1202/084531.125676:ERROR:shared_image_stub.cc(470)] SharedImageStub: unable to create context
[61126:48387:1202/084531.125684:ERROR:gpu_channel.cc(449)] GpuChannel: Failed to create SharedImageStub
[61126:48387:1202/084531.127800:ERROR:gl_context_cgl.cc(115)] Error creating context.
[61126:48387:1202/084531.129710:ERROR:gl_context_cgl.cc(115)] Error creating context.
[61126:48387:1202/084531.129726:ERROR:gpu_channel_manager.cc(771)] ContextResult::kFatalFailure: Failed to create shared context for virtualization.
[61126:48387:1202/084531.129732:ERROR:shared_image_stub.cc(470)] SharedImageStub: unable to create context
[61126:48387:1202/084531.129739:ERROR:gpu_channel.cc(449)] GpuChannel: Failed to create SharedImageStub

This can be temporarily bypassed (as documented on this GitHub Issue for another qt-using project that fails to render on macOS) with the following invocation:

QTWEBENGINE_CHROMIUM_FLAGS="--disable-gpu" /Applications/Anki.app/Contents/MacOS/anki

I’m happy to provide extra debugging feedback when I can, although I won’t have access to this computer for some period of time … if anybody else runs across this issue, I adapted ahihi’s script to “patch” (… sort of) Anki so that you can successfully launch it from the Finder:

Download, set as executable, execute, and rebuild the LaunchServices database:

/System/Library/Frameworks/CoreServices.framework/Versions/A/Frameworks/LaunchServices.framework/Versions/A/Support/lsregister\
   -kill -r -domain local -domain system -domain user
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