Okay, I'm not entirely sure this is the right place to post this, because this is probably because of me.
Anyways, I made a 20x20 map in the SC Map Editor, only with heightmaps and water so far. It looks good in the editor itself and since the editor is all in-engine I'd expect there to be no issues ingame aswell. Thing is, when I load the map in FAF or FA, there's a giant black layer over my whole map. A couple of the mountains peak through it and I can look under it with the spacebar. I tried to raise the whole map about 50 y-coordinates up but that didn't change anything. Anyways, here are some screenshots!
The map in the SC Editor.
The map in the game, FAF or FA.
The view 'underneath' the black layer; the layer is invisible from the other side.
The edges of the map seem to very glitchy aswell.
Thanks in advance!