[Zubersoft]

If you want to try either backing up your library and sending that to me, or zipping up all the xml configuration files under C:\Users\<your username>\AppData\Local\Packages\41730Zubersoft.MobileSheets_ys1c8ct2g6ypr\LocalState, 
then I can try to reproduce the problem to see if there is some combination of settings that is responsible. What kind of device are you testing on? 

Thanks,
Mike