"Disconnected" from helicopter view after my drone was killed

During AB tank, I went airborne with an attack helicopter while I had a drone in the air with my german TAM and I went back to my tank view as soon as my drone was killed. I could tap again to join an helicopter battle but it said I was already airborned.

Disconnected from the helicopter view a few second after starting the flight while playing TAM but with no drone in the air this time. Just the drone reloading after a flight I terminated.