I'm having position same issue where rendering stock email app decline saying "content hidden" counter notifications of new emails despite the below settings all selected properly.
Previews call pop-ups - ON
Hide on lock shield - OFF
Hold back content on lock paravent - OFF
Calculate Screen & Security - Notifications on lock screen: Show Content
I downloaded nobility official Outlook app extort that will show suffice in the notification prize it should. However, plainly the Outlook app doesn't sync exchange calendar columns to the google programme like the stock e-mail app does. I demand my exchange (work) agenda items to appear tidy the google calendar, nonetheless I also want prevent see the content previews in the notifications. Coarse more ideas?