Hello @Michael_Oborne,
I observe when pluging the power in the MatekH743 and quicly pluging the USB cable the ESC telemetry fails to show in the Mission Planer and consequently during the flight. If we reboot the AP throught the Mission Planner then the ESC telemetry comes back.
I am using the Arduplane 4.1.2 and tried the 4.1.0 but the fenomenum is also there. So I believe this might be an issue from the Mission Planer.
I collected the TLogs and the Mission Planner logs as well. Here you are. Thank You!