[Reg 6.6.0->6.6.1]QCocoaAccessibility Crash with Mac VoiceOver enabled

This is a highly  serious issue.
Basically QAccessible is broken. Applications with Qt. 6.5. or 6.6 crash on macOS when using listbox, combox, tableWiew, and similar.
If VoiceOver is not activated the crash happen randomly. But on Mac Sonoma the problem has worsen and and applications crash frequently.
Luckily with the VoiceOver enabled the application always crash immediately. So it is now probably easy to spot and correct the problem (assuming there are not multiples issues).
I suggest to fix the problem immediately and come out with a new release  6.6.2 and 6.5.4.

Following you find information on the discovery and problems.

I suspect the issue is related to https://bugreports.qt.io/browse/QTBUG-119179 (ComboBox Accessibility Issues on Various Platforms)

Kindly let us know when you have a fix, so we can tests it with our application and see if the crashes happening in different places are still present.

Original post

QT Widget applications crash on MacOS with combobox, listbox when Voice Over is enabled.

You can replicate the problem using the example Project Standard Dialog .
On Mac iOS Sonoma Enable VoiceOver in System Settings > Accessibility > Voice Over
Click on the QInputDialog::getItem() the program crash.
With Qt. 6.6.0 there are no problems.

Crash happen in qcocoaaccessibilityelement.mm see following image

The same problem arrives also with combobox elements.

The same problem arrives on different computers. So I imagine you can easily replicate the problem.
If it is not the case and you need more information let me know.