Threaded view not working

Hi everyone,
does anybody know if in 6.714 the threaded view is broken?

It does not work for any of my accounts.
Works without problem in Outlook (on Win11), so it does not seem to be a host issue.

Thank you
Alex

Mhh… yes, seems token. I have it enabled but I do not see any of my (few) coversations to be grouped.