I have a piece where the vocals are in 3/4 and the piano is in 6/8. It’s frequently cutting the system in the middle of the bar (well, 2/3rd).
I have “Allow open bars to be cut across systems” unchecked, if that’s relevant.
I’m also having some bother adding double bars before the independent time sigs: I have to delete the sigs, apply the barline, then restore the sigs.
It’s an XML import, if that’s a factor.