rehearsal, segno and coda markings collide with measure number on first measure of system
When a rehearsal, segno or coda marking is added to a measure at the start of a system, it is displayed superimposed on top of the measure number. I can't speak for all notation software, but I know Finale simply hides the measure number in these cases. Perhaps MuseScore should do something similar?
I am using MuseScore nightly e255575 on Kubuntu 14.04 64-bit.