Problem when trying to re-pair device after unpairing - balena device retains pairing

[rcooke-warwick]

We have seen problems when trying to re-pair devices: balena-io-experimental/balena-sound#526

To reproduce (pi3, android phone, oneplus 7T):

1. pair phone to pi
2. unpair
3. When my pi3's containers came back online, I was unable to pair to it from my phone, getting couldn't pair with balenaOS 0687 because of an incorrect pin or passkey error.
4. I ssh'd into the bluetoothcontainer and with bluetoothctl paired-devices i saw: Device 48:01:C5:7B:61:78 OnePlus 7T - so the device was listing my phone as paired, when they were not paired.
5. I then removed my phone from the bluetooth blocks paired devices list with bluetoothctl remove 48:01:C5:7B:61:78 - I then was able to pair my phone to the pi again!

So it seems like there's a problem with the balena device retaining the other device as being paired, even when its not, which causes some funkyness when that other device tries to re-pair

[jellyfish-bot]

[rcooke-warwick] This issue has attached support thread https://jel.ly.fish/830551c7-b0d6-4016-bcdf-7cb7e906053f

[jellyfish-bot]

[rcooke-warwick] This issue has attached support thread https://jel.ly.fish/17452ac7-ef2b-4552-a872-53e9bc577a34