I've noticed that minion being blocked by wall when you give order to move far..
They don't move and panic (turn on themselves)
On the same way, when you click on the shop (not beside) your demigod try to go directly, and being blocked by hole..
I have noticed tis specially on Crucible when you want to go to the basic shop since the middle (or since the shop towards the middle for minion being blocked by wall)