Crash when enabling/disabling an item layer containing a ShaderEffect from within paint() method on MacOS

If you bind an exposed QML property to the 'enabled' property of a button, and the signal that notify that the property have been updated is emitted from the paint() method of a QQuickPaintedItem derived class, will cause a crash.


 

See attached example for more details.

 

Note that this behavior happens only on MacOS (not an issue on Windows, but I didn't check on Linux) and only if the button is in Material Style. Other styles (default, Fusion, Imagine) work just fine.