I noticed this bug after trying to take care of the opponents that are dedicated to a certain point on the map (vampire, knight etc.). It seems that sometimes (3 times out of 5) the instant the opponent went down it respawned to the same spot and I was forced to fight it again. This happened again, and after I got back I tried on a different opponent that had a dedicated spawn point and the same bug repeated itself thrice.
As much as it seems like a real fast way of collecting whatever you can collect from them, it makes killing them without dying in the end almost impossible.













