The other annoying thing OS X does is launch iTunes when Bluetooth headphones are connected. This steals audio from whatever the Bluetooth device was already doing, at least for me. iTunes can't be removed or disabled, apparently.
This has never happened for me, with AirPods at least. However, sometimes when I press the media keys (play/pause, forward, backwards) iTunes opens. Maybe your headphones are automatically activating the play button?
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The other annoying thing OS X does is launch iTunes when Bluetooth headphones are connected. This steals audio from whatever the Bluetooth device was already doing, at least for me. iTunes can't be removed or disabled, apparently.
This has never happened for me, with AirPods at least. However, sometimes when I press the media keys (play/pause, forward, backwards) iTunes opens. Maybe your headphones are automatically activating the play button?