Microsoft does not monitor this forum.
You are all wasting your time to complain here.
If you want them to see your comments, you MUST use UserVoice.
Here is a link to this issue in UserVoice.
https://microsoftteams.uservoice.com/forums/908686-bug-reports/suggestions/41278342-teams-now-setting-my-status-to-away-after-10-min
This issue has been reported under several threads. To get their attention, a thread must get a lot of votes. Then they will take it seriously and devote resources to it.
Until then, youre pi$$ing in the wind.