App Version: 2.63.1
Device: iPhone 11 Pro
I was moving the drone and it was 9 Km away, today morning without recalling the drone, it came back to home location.
Did portal it was on change hands or go natural? There is literally a stat for that- forced Drone recalls
Here you can read about the dron mechanics and how it works.
Once Drone Mark I has been deployed to a Target Portal, it will remain at that Target Portal until it is moved by the Agent, manually recalled back to the Agent, or forced recalled to the Agent.
A forced recall occurs when the Target Portal changes alignment at any time while Drone Mark I is positioned there (i.e. if the Target Portal is captured, neutralized, or flipped with ADA/JARVIS). Please note that Drone Mark I is still subject to the 60-minute cooldown even if it is manually or forced recalled.
and drone returns to the agent if the portal is removed from the network