On the AR-2 Darter, after some time, the Vision (Thermal/NV) key stops working in the UAV turret. Instead, it turns NVGs on or off on the player, even though you have taken control of UAV turret. You are left with the UAV turret with optics turned off with no way to turn them back on / cycle through modes.

Turning off and repacking the UAV does not fix the issue.

This bug: http://feedback.arma3.com/view.php?id=24143 , was also present except that TI vision was not disabled by script. The driver was stuck in thermals almost immediately. However, the UAV turret (gunner) did not have issues of its own until much later.