Conversations involving multiple participants, allowing collaboration and information sharing in Teams
Microsoft Teams Version 1.4.00.29469 (64-bit). It was last updated on 10/26/2021
Windows 10 v 20H2 build 19042.1288
had the same issue but now everything is fine. not sure what/when it has been fixed - maybe latest version.
the only specific thing i did: turned off then turned on the spellcheck in teams settings - general ( each time it requests to restart teams )