Map Bug

Maps that are in darkness and when you travel, the fog or darkness would start to show your path.
I went though the wall in to what looks like the grim tangle and I am stuck there, I had to teleport out, but now every time I do the map that has the darkness, when you move nothing uncovers, it stays black and if I touch the wall, I end up in the location that looks like the grim tangle, with no way out.
Current map that it did it on was called The Viridian Wildwood