Per wow:
This brings up a separate problem with formations though and I'm not sure where to bring the issue. Now that there's a default formation, when units fight and a soldier in their formation dies, the entire group of soldiers stops fighting for a second, reforms the formations, and then starts fighting again. This occurs for every death in the formation. Prior to this patch I would just set the soldiers to Null formation to stop this behavior, but now I can't really do that. Is there a Diff for this issue?
This happens because the controller is IDLE and units are attacking on their own, but since SetRerrange is true, any death rearranges the formation. This seems wrong indeed.
I fix it by setting that to false, and using a timer to reform IDLE entities.
Reported by: wowgetoffyourcellphone