I've only started experiencing this issue when using the 4.x testing build.
I saw that one of the bots has successfully extracted on Gate 3 on factory, because all the doors were open and there was nothing there.
I tried using the exfil, but instead of my screen going dark and going to the extracted screen, my HUD just disappeared, all bot acttions stopped and all UI elements would become inaccessible, forcing me to close with an ALT+F4.

The above PNG presents the very last bits of my log, which I hope can be helpful as it seems to have caught an exception related to bots extracting.
I've only started experiencing this issue when using the 4.x testing build.
I saw that one of the bots has successfully extracted on Gate 3 on factory, because all the doors were open and there was nothing there.
I tried using the exfil, but instead of my screen going dark and going to the extracted screen, my HUD just disappeared, all bot acttions stopped and all UI elements would become inaccessible, forcing me to close with an ALT+F4.
The above PNG presents the very last bits of my log, which I hope can be helpful as it seems to have caught an exception related to bots extracting.