I read that there was an issue with divisi and disappearing time signatures. I have a similar problem, only that it occurs at the very beginning of a piece!
In the beginning of an orchesta score I have strings set to divisi and the time signature (of the first bar of the piece!) vanished. I don’t see how I can get it back. Not having a time signature at the beginning of a piece is not an option unfortunalety. Can anybody help?