Happens after taking a flyout regardless of type, controls switch to ground vehicle with no warning or visible reason. After that, selected flyout icon in lower toolbar remains the same as during countdown during flyout. Happened with M3A3 Bradley, other vehicles with UAV launch option are likely affected too.
The issue can be observed at 6:10 for player MilesSeventh, the moment UAV gets shot down controls return to ground vehicle despite attack aircraft remaining intact.
https://warthunder.com/en/tournament/replay/121158154088242310