Problem with colliding time signatures and rest beams in Sib 5

I am creating various parts for a piece. Sib 5 automatically turns multiple bar rests in the score into multirests in the parts, which is fine. However, when I have the start of a multirest at the same barline as a time signature and a key change into a key with several #/b, it is not allowing sufficient room to fit the sharps/flats, the time signature and the horizontal beam of the multirest. I can move the time signature and the key signature, but not the beam, which means I cannot avoid having things squashed into too small an area, with the result that they collide. Any ideas what to do? The screenshot shows what I get.

Reset note spacing. That should fix it.