Your saying the issue started after the latest update. Have you tried the rollback option offered HERE? It would aid in troubleshooting to see if the issue is truly related to the update.
Let us know
Feb 22, 2017
Had exactly the same problem on both 1.2.9 and 1.2.10.
Downgrading to 1.0.6 fixed it. So this is definitely a problem (another one) with the new updates as opposed to a macOS bug.
Feb 15, 2017
@Tony_G so downgrade did the trick. Question is, when should we expect new firmwares and also will we be able to still downgrade if the issues persists on future updates? What's the policy here?
I had this issue on macOS Sierra. Pausing spotify would mute all system audio. I did the reset trick (turning off, waiting, connecting to power, waiting, disconnect from power, waiting, turn on), see previous post. This fixed the issue for me. I'm running firmware 1.2.9. I see that there is a new firmware. Should I upgrade to that, or is this problem still existing in the newest firmware?
Mar 29, 2017
Hi there. I just upgraded my QC25 to QC35 and updated them through the app so I'm now running 1.2.10. I'm experiencing this "sound pause on all sources" aswell when listening from my Macbook Pro running macOS Sierra 10.12.3.
Seems like the "reset" methood didn't help at all. The problem is back. I'm currently running on firmware 1.2.10.
The only way for me to use the headphones now with Chrome is f.x. by leaving Spotify on play, and just put the volume in Spotify to zero. That way the audio isn't muted and I can listen to audio from Chrome.
Have you tried pairing to a mobile device like a cell phone or a tablet? Would help to know how it functions on another platform.
Let us know