It is very unlikely that the controller will not finish a recording once it has been started. If you lose Bluetooth connection to the controller, it will still finish the recording.
However, in some cases, we experienced that the wrong DC power supply connectors have been used which result in power interruptions to the controller. PINE requires a 5.5 x 2.1mm DC plus (center positive) for its power connector. If a 5.5 x 2.5mm plus is used, power might be interrupted during movement. It those cases, the controller will shut down because it has no power and might boot up again afterwards. If the wrong connector is used, power interruptions are usually only temporary for a few milliseconds, but it’s enough for the controller to reboot.
Please always use the appropriate 5.5 x 2.1mm DC plug to power the controller.