Can't shoot adjacent object

It’s quite annoying when I put my soldier behind a closed window (not the big glass walls in Syndreon areas, actual windows that you can jump and shoot through) but can’t shoot at or through it for some reason. The enemy is just on the other side, could my soldier please just elbow the glass or something if it’s so in the way? Even tried swapping to the pistol instead of a large rifle, cause it would make sense if smaller weapons at least worked. Nope.

Had the same issue with a glass “door” in an Anu Map, my Berserker stood one one side and an Anthron on the other. For some reason the Berserker wasnt able to take his big ass hammer to smash the glass and the enemy behind it.