This behavior is extremely frustrating. I have a pair that only supports one device, and on the occasion that I connect them to my MacBook and forget to unpair or turn off Bluetooth afterward, they will permanently be usurped by Apple Music -- computer awake or asleep -- and my phone never stands a chance.
I actually think Apple is the reason why newer headphones are starting to support two devices. Apple makes a decision for themselves and it forces entire industries to move that direction. As someone who hates the Apple approach (please give me the Woz machine: more ports, more open, more hackable, more mine), it is painful to watch. Yes I'm still bitter about headphone jacks :-D
What if you have a personal MacBook *and* a professional MacBook? Well they occupy the two available seats from the “multi-point” system of the Bose QuietComfort 45 and my issue is not solved.
