Not sure if it's a glitch or not? Whenever I play 4 Player Chess, either FFA (Free For All) or Team matches and I click on another user's name during the game, and subsequently go to their profile (which opens up a second screen) the sound stops working in the match.
This requires me to refresh the page where the game is taking place (and sound returns), which isn't a huge inconvenience, but it is rather annoying to have to do. From time to time, I will either add someone as a friend or want to send them a trophy, and this results in me having to temporarily disconnect from the game, in order to refresh my browser (Firefox 66.0.3 64-bit).
Thanks for any insight you can provide.