Zoom hijacks bluetooth audio while macbook is sleeping

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MacBooks connect to bluetooth headphones even when the computer is sleeping. Mine are often connected to both my iphone and macbook simultaneously. If I leave zoom running on the background when the computer is sleeping, zoom will force a priority on the audio, thus making it impossible to listen to music from my iphone as long as zoom app is running. Problem gets instantly fixed whenever I close the app. Does anyone else have this problem? MacOS Big Sur 12.1 and Zoom 5.9.3.