For the mission called ATC, tier 3, which is to locate a control panel to begin switching off the EMP field, there was a deadly bug. The zone marked at the destination was a tiny circle right in front of an Orachi guard (more specifically a laptop on the hood of a minivan with a guard right in front of it). I looked for a way to distract her, and then tried to sneak up to the lap…
After being knocked out and dragged down back to my hole, the destination for that quest was then properly placed as normal.
EDIT - Secondary oddity : the achievement “Super-spy Plane” (i.e. remain unseen doing all this) was somehow given to me (?). I presume the green checkmark means it is done.
EDIT 2: never mind the achievement bit: I got it when doing it the second time.