Grace notes colliding with main note

I posted this issue about two days ago and no one has looked at it - I can't actually use anything I create in MS without it, as all the parts I need to make have grace notes on them. I don't know if it's just because the Beta is drowning everyone in issues, but I don't want it buried before it gets a priority rating.

#278986: 'After' grace notes appear superimposed on main note in short measures