From OTRS: https://ticket.wikimedia.org/otrs/index.pl?Action=AgentTicketZoom;TicketID=11682277

There is a bug in the iOS app I have noticed where an article will not display the most
recent revision. I first noticed this on the Nigeria article at the beginning of September
2020, and again just now on the Vichy France article. The app was displaying vandalism on
these articles after it had already been reverted. I checked and both the desktop and
mobile sites showed the correct revision, with no vandalism, but reloading the mobile app
did not update to the most recent revision. Performing one or two dummy edits on the page
seems to force it to update. I did not think to take a screenshot but will if I see it
again.