I found with using teleporters there were a couple things to remember.
1. Make sure if it is an enclosed area, make the room 3x3 (3 segments across and 3 segments down) to form a square.
2. Make sure the teleport "Out" entity is right in the middle. Just like the following:
As you can see, the IN can be in the one segment part with walls around it, but the OUT cannot due to the collision.
Here is the layout in game.
I can approach the teleport IN.
I teleport to the OUT and can move about without getting stuck.
- BlueFox