Hi Andrey,
Calling stopReaders when PowerOperation is set to BluetoothConnectionControl will disconnect connected readers and is used for disconnecting them when the app goes into background, this required that Bluetooth polling would be ready to connect when the app comes into the foreground which causes a problem disconnecting them without backgrounding. Unfortunately, this hasn’t been dealt with, I would recommend trying to using CoreBluetooth’s CBCentralManager stopScan method to override the issue in our SDK.
Scott
