This glitch happens from time to time where you are unable to speak or listen to team/group chat. Switching between channels/ leaving and rejoining the channel doesn’t fix the problem, only reseting the game does. The game shows yourself as « muted » and you can’t ever really get to see people in your channel with their audio icon on.
I have the same issue, Are you using push to talk? I do not know if this only happens when using PTT.
Also, it sometimes happens mid-match on competitive, once the second round starts I get the mute symbol and other players see the message that I have left the voice chat
no push to talk for me