Using Classic Outlook on Windows for personal email, calendar, and contact management
I also have this problem in the new Outlook 2023. A temporary workaround that I use is to 1) Highlight one email (anyone) in the email folder (the Inbox for instance), and 2) press Ctrl+A to select all emails in that folder, and 3) hold down the Ctrl key and deselect one of the selected emails (anyone). Then Outlook shows the number of emails MINUS ONE in that email folder. So if there are 54 emails in my Inbox, Outlook would say "53 items selected".