Casimiro, he probado lo improbable.
Estoy empezando a sospechar que el problema quizá sea de la versión de Delphi 11.0 que estoy usando.
Código Delphi
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BluetoothAdapter := FBluetoothManager.CurrentAdapter; ------------------------------------
const
BlueTooth = 'android.permission.BLUETOOTH';
BlueAdmin ='android.permission.BLUETOOTH_ADMIN';
BlueConect='android.permission.BLUETOOTH_CONNECT'; BlueScan = 'android.permission.BLUETOOTH_SCAN'; BluePrint ='android.print.BLUETOOTH';
BluePrivi ='android.permission.BLUETOOTH_PRIVILEGED';
BlueDebug ='android.permission.BLUETOOTH_DEBUG';
CorseLocate = 'android.permission.ACCESS_COARSE_LOCATION';
FineLocate = 'android.permission.ACCESS_FINE_LOCATION';
BlueSeting ='android.permission.BLUETOOTH_SETTINGS';
BlueAdvert ='android.permission.BLUETOOTH_ADVERTISE';