title: bluetoothctl does not show bluetooth low energy (BLE) device
body: <p>I would like to pair my Bluetooth Low Energy Sport Watch (Suunto Ambit 3) to my Raspberry PI 3 B V1.2
  I am using the RaspianOS Version 10  buster with kernel Version 5.4.79-v7+
  This OS contains the bluez stack in version 5.50 which was installed from a predefined package via apt-get.</p>
  <p>Usually the ble pairing is done with smartphones under android and IOS. When doing the pairing process the watch offers a pincode which has to be entered by the smartphone.
  With nRFConnect app under android the pairing works fine.
  When I am running the hcitool on my raspberry and the watch is in pairing mode it appears.</p>
  <p><code>sudo hcitool -i hci0 lescan</code></p>
  <p>but when i try to run the <code>sudo bluetoothctl</code> command with <code>scan on</code> my device does not appear and pairing with the correct mac address does not work either.
  Other devices still appear in bluetoothctl
  I also had a look into <a href="https://github.com/raspberrypi/linux/issues/3689" rel="nofollow noreferrer">https://github.com/raspberrypi/linux/issues/3689</a> but this seems that this is only related to newer raspberry pi models.</p>
  <p>Do have any idea what hinders my device from being found in the bluetoothctl scan mode or what can I do to pair my device with pin code enabled?</p>