Repeated macOS crashes during screen sharing / accessibility access — Anki 26.9.2

Anki repeatedly crashes during screen-sharing/computer-control interaction on my Mac, including a session with ChatGPT. The exact minimal trigger has not been isolated.

Environment:

  • Anki 26.9.2

  • macOS 26.6.2 (25G83), Apple Silicon

  • Qt 6.11.0 / PyQt 6.11.0

  • Enabled add-ons: SynapsePro and Interactive Heatmap

Five crash reports from September 29–30 show the same pattern:

  • EXC_BAD_ACCESS / SIGSEGV

  • Triggered thread: CrBrowserMain / main thread

  • libqcocoa.dylib followed by NSAccessibilityAttributeAccessorInfo, accessibilityArrayAttributeCount, and __AXCopyAttributeValueForHierarchy

I’ve attached an extracted crash report with the stack and binary identifiers. I have not yet tested with add-ons disabled.

Could someone help determine whether this is a Qt accessibility issue or an add-on interaction but The forum prevents new users from attaching files, so here is the relevant crash-stack excerpt:

  • Exception: EXC_BAD_ACCESS / SIGSEGV

  • Thread: CrBrowserMain / com.apple.main-thread

  • libqcocoa.dylib — unsymbolicated frame, image offset 554036

  • AppKit — NSAccessibilityAttributeAccessorInfo getAttributeValue:forObject:

  • AppKit — accessibilityArrayAttributeCount:

  • AppKit — GetAttributeValueCount

  • HIServices — __AXCopyAttributeValueForHierarchy

  • HIServices — _AXXMIGCopyHierarchy

The same pattern appears in five crash reports from September 29–30. I can provide the complete report if attachment permissions are enabled or another upload method is available.

I have not yet tested with add-ons disabled.

Related: macOS: accessibility scan can crash Browse when a row is selected