uncheck courtesy for time- or Key sigs in inspector has no effect when having the courtesy time- or keysig selected
On s score that has courtesy key- or time sigs, select that courtesy key- or timesig (the one at the end of the line) and then in inspector uncheck it.
desired effect: the courtesy key- or time sig disappears, or that button doesn't show
actualy effect: nothing happens, except that the button is unchecked.
Apparently you have to select the 'real' key- or time sig (the one at the beginning of the next line) for that button in inspector to work
the 'show naturals' for key sigs does work as expected, although only for that courtesy key sig, not for the 'real' one. Not sure whether it should or not.