The issue is when you close out of Outlook O365, you are unable to see the full content of emails. If you are experiencing this issue, contact us to help you resolve it.
We’re investigating an issue with email message visibility in Outlook. Outlook on the web appears to be unaffected. More details can be found under EX255650 in the admin center.
— Microsoft 365 Status (@MSFT365Status) May 11, 2021