Using Classic Outlook on Windows for personal email, calendar, and contact management
It's not a new change. These icons have been a feature in Outlook for YEARS. Many years. But they are disabled by default. The March 2024 update forced it to be enabled for everyone. That's the issue, and it is a problem (unless you manually want to disable the icon for all of my users, and each of their mailboxes since every mailbox must be done separately).