I'm having a problem with my new and unused RVOSD v5.02 so I hope it can be solved so that I can start to fly FPV...

Several seconds after powering up, any control movement to lower than neutral (150ms) positions causes all controls to briefly twitch about every 2 seconds while 'autopilot enabled' simultaneously flickers in the display.

I'm using RVOSD in combination with a Scherrer UHF long range RX connected via combined PPM channel.
It doesn't make a difference whether I connect the RSSI cable or not.
It doesn't make a difference whether I use a lower or higher than normal throttle failsafe.
This bug isn't listed in the firmware changes up to 5.05.

This is a video that displays the problem. Watch as I hold full right aileron (< 150ms) constantly until the problem starts occuring:


Thanks,
Craig