Comment # 3 on bug 991612 from Stakanov Schufter

As of today, the update to pulseaudio allows not to use the profiles....but
only in particular users. There is an issue of "focus steeling" where
apparently, if several users are open and had paired with the device in the
past, and the user that is active when the headset is switched on is e.g. third
in a row but active on screen (that is tty7, 8 and 9, and you are tty9 active
seat) the BT will pair with the headset in TTY9 correctly but will have no
access to the profiles. 
When going to the user logged on earlier, pairing will work, and profiles will
be switched. Sound is not excellent but a real improvement from before. 
Still the order in which either USB devices or BT devices are recognized by
plasma seems still not logical or understandable. With BT devices, seats that
are opened before seem to be superior when requesting pulseaudio profiles
compared to seats that are opened after. 
If there is any possibility to log what is happening when the profile is not
taken in these conditions, feel free to guide me, I will be happy to provide.