Using Microsoft Teams on macOS, including installation, features, and compatibility
Hi all,
you can follow this steps, MacBook/Windows.
1 Teams
2 Settings
3 Notification and activity
4 @mention
Channel and team @mentions - show in activity and banner
Tag @mentions - show in activity and banner
Everyone in chat @mentions - show in activity and banner
Personal @mentions - show in activity and banner
Replies to my channel posts and replies - show in activity and banner
Likes and reactions - show in activity and banner
Keep this same settings and check, might be fix issue.
hope for the best...