Hi!
What is your version of Teams client?
Does anyone else have the same issue in your organization
Our client’s version is 1.3.00.19565 and have the new function “Together Mode” in Teams meeting. I did a test in my lab and we can find someone who raised the hand in the meeting.
In this case, we recommend you try to log out Teams and clean Teams client cache, then restart the client again to see if this issue still persists.
For more details about how to clean cache file:
https://www.onmsft.com/how-to/how-to-clear-your-microsoft-teams-cache-on-windows-10