In gamemaster solo, when I take the control of an AI unit, the control inputs are frequently glitched. It means that for example I won't be able to change my weapon, open the inventory, or drive/start a vehicle anymore... I think it occurs after spending some time switching back and forth from game master to AI control, after the death of the controlled AI, or something like this.

It should be noted that this never happens if the character controlled is a "player" (created by right clicking and create player). This only happens when taking control of standard AI characters.