Round table

Sometimes I noticed inappropriate behavior from Nagas, like in this video (change the extension from zip to mp4). Here you could think it's due to fear, but sometimes they stop right next to single units. Any ideas?

The other day, I encountered a similar situation in a Naga battle. I positioned Archangels so that two squads of Nagas would attack them, hoping to distract them, but they just crawled away in different directions without attacking anyone.