Huh, once I believe someone muted me then tried to unmute me and I got a popup saying the host wants me to unmute. I'm pretty sure I didn't mute myself; I was in the middle of talking, and my hands weren't even on my mouse or keyboard. There was someone else making background noise, so I believe the host tried to mute that person, accidentally muted me, then tried to unmute me causing me to get the popup.