Hello,
I am not sure if anyone else has encountered this glitch but I have recently began using Apple Pay on my Apple Watch. At first, each time I pressed the Dock button on the side to get my card ready for payment, I noticed that the volume had lowered. If I swiped left or right, the volume would at times remained low and then jump back up when I swiped, and then go back when swiping a third time. I didn't really notice a patern as it would randomly raise and at other times, lower each time I swiped. I first thought that this may be a security feature so others around you couldn't hear your watch, but when I noticed the volume randomly raising and lowering each time I swiped, I figured it was a bug with using Apple Pay on the watch.
Although now I believe it may be a bug when only double pressing the dock button. I was playing with the watch today and pressed the crown to view the list of apps, then I accidentally double pressed the dock button and noticed the same glitch when swiping through my list of docked apps. I had originally sent Apple an e-mail with my initial findings but sent them another one today with what I had discovered.
So I am just curious to know if others have also encountered this bug or perhaps it is only me. Thanks!