Targeting an infantry ability at range, be it placing sandbags on Volksgrenadiers or firing a barrage on the Ostheer mortar squad, sometimes causes the ability to get highlighted as being prepared, but the unit doesn't actually move to the location and start using the ability.
Other times, one model from the unit starts moving towards the location while all other models sit in place, also preventing the ability from triggering.
Have had this bug occur in half a dozen matches just within the last few days.
Now I finally have a replay:
Just past the half way point in the match is an instance of the bug, where the mortar squad is hiding behind a wall, is ordered to fire a barrage northward, activates the ability as if preparing to use it but never actually tears down and turns to be able to use it, thereby freezing up until I give the order to tear down and move from that spot.
Don't have the time to read through patch notes to see if this has been fixed, so figured I'd just write this post quickly.
This bug is extremely damaging to Ostheer play in particular, since you really need every unit in your combined arms army to play their role as soon as they are ordered to. But I have had it happen on OKW as well, in particular with Volksgrenadiers given the order to build sandbags.
Oh, and here's a screenshot of Volks being ordered to lay sandbags near the flagpole and only having one model actually travel there:
![](https://i.imgur.com/44Udu1X.jpg)
This has happened multiple times on different maps and in different circumstances, so doesn't seem to be related to units being in cover, nor specific to setup units.