Cannot suppress C major courtesy key signature
P1 - High
S2 - Critical
Enter a score that has a key change from anything to C major. Put a system break before the key change.
There is a courtesy key signature that does not allow you to turn it off.
Initially reported in https://musescore.org/en/node/283106
Actually, it is possible, but not obvious: select a clef at the beginning of the system, Alt+Right to then select the (invisible) key signature, then use the Inspector. But yeah, we need to be able to do this directly from the courtesy. Would be nice for other cases to, not just for C.
In reply to Actually, it is possible,… by Marc Sabatella
You can turn off the courtesy key signature in other keys, by selecting them and unchecking "Show Courtesy." The problem is that there is no key signature to select for the key of C and the naturals are only shown in the courtesy key signature (outside of the very obscure workaround). I think the "invisible" key signature is a bug also because the space is left for the naturals that would have been shown. This isn't so noticeable when changing from the key of G major, but quite significant when changing from Cb major.