The .Sav file ''foto's'' have a big white and blue ''glitchy'' line in them (~20% of my save files have them, especially when a bigger part of the map has been explored). it also shows in the timelapse of the colony's. it always appeares to the left of the spawn. It doesn't affect the game/loading as far as I know, so it is a minor bug.
Anyways this game is awesome!
I don't exactly know how this happens, as I said, it happens ~20% of the save files when the map is expanding. I don't know if more people exprience this, but I couldn't find it in the list of bugs.