by Plasma_Wolf » 04 Mar 2014, 11:43
I've had that bug, but I don't know what causes it. However, I only had the big when I disabled the stratum visibility, saved the file, closed he editor and the. Opened it again and loaded the map.
I do t know about a fix, but you might want to replicate the problem with the log on, to see what happened. Other than that, export he mask before disabling the stratum, so that you can import it again if you lose it.