Happened on the level 7. There is nothing to fight unless they decided to attack the gates. Even then, they just stood there for a while, then finally started claiming territory.
My workers behaved differently here, choosing to flee. I suppose they're fleeing from units on the other side of the door, unless the door itself has a threat value.
Replication Steps:
1. Start Level 6
2. Convert a tile in screenshotted area
3. Drop workers in.
I can not reproduce any real issue here, yes the door has a threat value and I see a corner case here.
So what they do is going to the tile, starting to claim and then get scared and flee.
They do this multiple times but finally manage to to claim the tile.
So I can not reproduce a "fighting glitch" and for me they show either claim or flee activity.
My workers behaved differently here, choosing to flee. I suppose they're fleeing from units on the other side of the door, unless the door itself has a threat value.