Monitored device (Bluetooth) empty after boot

First of all thank you for the development of this application is a simple, objective and creative tool.

The "Monitored Bluetooth device" is an empty parameter as soon as I start the system, after a while the combo is automatically populated correctly. If I edit the "reflex" I select the device normally.
It happens to someone else? Is there anything I can do to fix?

Thanks for listening.