Thanks for moving out of the beta thread Toni; I was just about to do the same
Ok so have now tested all the way back:
... WinUAE v2.3.0
... WinUAE v2.4.0
... WinUAE v2.5.0
... WinUAE v2.6.0
... WinUAE v2.7.0
All versions have this issue; ancient bug it seems.