I was walking in my Necromech when I saw an injured Vulpaphyla I could grab, I noticed I couldn't grab it in the Necromech so I briefly exited it and pressed the prompt to capture it as the operator, but returned to the Necromech before the capture info screen popped up. What resulted was the drone picking the animal up and being stuck, so I exited the Necromech again, then returned to my Warframe, and after that I couldn't return to my operator or Necromech, with a note saying my ability wasn't ready yet when I tried.
Going to the Necralisk and then returning to the Cambrion Drift didn't fix the issue, returning to the Orbiter and then back to the Cambrion Drift did fix it.