Not sure if this has been reported or not but on 5/10/2017 I experienced this as Isabel using Ghost in the Machine on Xbox One:
During multiplayer team war 3v3, I used Ghost in the Machine to take over a bunch of blisterbacks. My unit count went to 129/120. Once I lost control of the units my unit count stayed the same and I could not build any new units at my base. I should have been able to build more units; I only had around a 70 unit population active.
I am playing from eastern USA. I 404 c murda gamertag.