It's "X" on PC, but it doesn't tell you that, had to google it to find out because I haven't done braindances for a while and forgot how to move to next section.
Worth mentioning that I got more cyberware for the arms, that might be what triggered it (Mantis Blades perhaps?) either way it's something that should definitely be fixed.
The drones can block your way if they fall where they shouldn't in this mission, can easily happen near one of the top floors, hard to avoid if you haven't saved before that, they should become non-solid for the player when they are destroyed