I was setting up a new RetroPie 4.7.1 build to connect to a new 8bitdo Pro 2 controller.
However, almost every time I'd open Bluetooth config and try to Pair and Connect to Bluetooth Device, I'd see Searching... followed by this error
No devices were found. Ensure device is on and try again
Power cycling the controller / raspberry pi did nothing.
Occasionally it would find my device, but then when I'd try and select the DisplayYesNo
security mode option, the computer would freeze.