Unsolved QML MessageDialog button order reversed on Windows/Linux/macOS

[VRHans]

Using 5.11.1 and a VERY simple application example yields the exact reverse of what the Qt documentation for qml's MessageDialog - on Windows, Linux, and macOS.

These are the MessageDialog's properties - I've discerned no way in which to affect the order of the display of the buttons.

The attached image shows the weird result:

I get the exact same order across all three platforms.

Any suggestions other than 'roll your own'?

Thanks!