Grouping chats and channels is no longer possible

I am in the same boat, On Friday 4/11 towards the end f my shift Teams "updated" and when it restarted, all of my sections in the Teams > Chat tab were missing and I was left with "Pinned" and "Recent" after double checking the web version I found the same thing there, other co-workers are stating they started experiencing the same issue on Friday as well. I Initially thought it was a glitch and would be resolved by Monday but here we are...
(And people wonder why I don't want to upgrade personal devices to Windows 11, well if this is an indication of the quality of development that is going into Micro$oft products, no further answer is required.)