For two different rooms on ca.meet.coop in the past couple days, two different people absolutely had to mute when not speaking or their mic would fully echo back anything anyone else said a couple seconds later.
Same people, same hardware, not getting this problem on a different BBB server.
Thanks for reporting this issue @mlncn. I’ve also had a similar experience from time to time, but it has not been easily repeatable (often if leave the room and then rejoin or log back in everything is fine). I’ll ensure this information is fed in to our ongoing development.