Using Classic Outlook on Windows for personal email, calendar, and contact management
Thank you Gabriel for confirming this is a bug.
As an item I found, there is some options for pushing updates out to hide the Report button from Outlook through various ways, but to share one option, you can modify the olkexplorer.officeUI file in the C:\Users{user}\AppData\Local\Microsoft\Office path and append the following:
<mso:group idQ="mso:GroupReportAction" visible="false"/>
to manually hide the Report button from the ribbon. This can allow for a more automated approach across an environment.
This doesn't seem to work for me. Do you have to apply it in any specific point within the UI file?