Had a bug in a recent chasm terminus mission. We got to the hacking part and I pressed E to bring up the auspex. When I clicked to move the pipper down it made a double “DOOT-DOOT” sound and the pipper bounced back up to it’s original level. This happened several times and I couldn’t figure out why until I backed out and realized that another person on the team was also hacking at the same time and our inputs were cancelling out.
Normally there is something in place to prevent you from initiating a hack someone else is already working on but evidently it can fail.
I’ve had this happen to me once, ages ago, January, I think? I think we both tried to hack at the same time,with the server delay it happened at exactly the same time and the game let us.