Plan screen: multiple vehicles appearing (one for each reboot?)

For whatever reason I am seeing multiple vehicles appear on the Plan screen even though I've only connected to a single vehicle and it is a relatively simple setup (just a CubeOrange with a GPS). I think a new vehicle appeared each time I rebooted the autopilot from the Data/Action tab.

Start by reproducing the report in the Plan screen with one CubeOrange and GPS, rebooting the autopilot from the Data/Action tab and checking whether another vehicle appears. Trace how the Plan screen tracks connected vehicles across reboots; done means a single connected vehicle remains visible after repeated reboots.

Written by the indexing model from the issue text.