StartAllBack picks wrong "main" taskbar (Windows 11)

[eekboom]

My setup is notebook on the left, two identical external displays to the right.

I can use Windows' Display Settings to select the notebook as main display and StartAllBack acts correctly: It shows the tray icons and my configured custom toolbar folder on the notebook's toolbar.

But if I make the middle display the "main display", then StartAllBack always treats the right display as "main".

I even physically switched the monitors, but when II adjust the display order accordingly in Windows Display Settings, the bug is back.

This screenshot shows the middle display and the left part of the rightmost display. (So there are two vertical taskbars at the right, the  first one is from the main, middle display, the second one is from the rightmost (non-main) display.)

If I switch "Use enhanced classic taskbar" off in the StartAllBack settings, the the default taskbar are correct.