Headphones (QCC Bluetooth dongle) unavailable for output from FX after waking from sleep

It’s greyed out. If I unplug and replug dongle it reappears normally in the output choices. My other 2 output choices (onboard sound software and HD audio driver) remain available choices after waking up.
What is going on and can this be fixed? Will restarting the program resolve this? No bueno.