Imps are just circling around the dungeon core
The Ai Imps in skirmish games are just circling around their dungeon core 
they are not constructing rooms even if they have the free space needed for it 
Game Version:
      
          Steam Public
      
    Platform:
      
          Linux
      
     
 
 
Can we get a save game showing this?
How to: Locate your save files