One side of cliff will let you build on it but the other not

[Sleep]

I had no problems with the other side of the cliff,but with this i have.
Red is where i wanted to place another wall section but cannot and you can walk in/out from there.
Blue is where im going to do.
Could this be fixed for the future?

[Granger]

Building along the blue line won't close the gap (you'll still be able to walk in there).

This is a known bug with the cliffs, some of them have a bugged bounding box.

[Oblivior]

I had the same problem until potjeh helped me.

The solution requires you to build a a new corner post hold Shift (button) to build (offgrid) the cornerpost a little infront or inside the walled area covering the hole. make sure you cant squeeze trough it il post a pic to show you what i mean

[Oblivior]

your welcome...