I am having some issues with these two autotile pieces. I believe the issue is that in Columns 2 and 4 in an Overworld tileset assumes the edges are transparent.
what did you do to fix it because I tried making my own collage tileset of different things for overworld but I end up creating the same problem even though the sample works fine when it's in their tileset.
just like the other one except a swapped out something for another thing that shares the same A2 tileset type for overworld and put the swap in the exact same space.