Stair issues

[zaxies]

This is what happens when i place stairs on a level..

http://imgur.com/a/InBhT

the 3rd image is what it looks like when you go down the stairs.. You clip through the floor..

They are all messed up heres the level design..

http://i.imgur.com/8CVmzdV.png first floor

http://i.imgur.com/ssUaqst.png second floor

[Asteroth]

Stairs need to be surrounded by walls on all sides but the front. I'm not sure if secret doors can be used as pseudo-walls for this purpose.
If you don't place walls around (including on corners) thats what you get.

[Neikun]

Walls of the side should be as easy as putting secret doors on the side of the stairs, but I can't think of a way to correct the floor behind it.

[Alcator]

It's fairly simple:

While the editor OBJECT for stairs seems to be only 1 tile big, the staircase is actually 2 tiles big (in the direction of the stairs) That's why the game requires WALL behind the stairs, which gets replaced by the stairs' second half in runtime.