issues building near cliffs

[ellspeedy]

basicly i have a td map, and around the edges there is a cliff. in some places i can build right next to the cliff (on the lower level i mean) but in other places i have to leave a gap to build.
this becomes a pain when building a large maze and then u get stuck becos u cant build next to the cliff to block ur maze at that end

anyone got any ideas of the problem and how to fix it?
thx
ellspeedy
p.s. plz dont tel me to just remove the cliffs they are part of the map style =)

 

[Accname]

the tile.

if you place an unbuildable tile at the position of the cliff you wont be able to build structures there.

you cannot see which tile is placed there because the cliff is on top of it, just press "P", its the shortkey to display the pathing of the tiles. if the desired position is blue you cannot build there because of the tile.