From Znuny: https://ticket.wikimedia.org/otrs/index.pl?Action=AgentTicketZoom;TicketID=11788718
My account show a huge amount of the same page (Yellowstone TV series) saved thousands of
times. I realized it as i was trying to bookmark a page and the app said i reached the
maximum of 5000 pages bookmarked. I never saved this Yellowstone TV series page, there is
a bug somewhere.i am using the app on an ipad 5th generation and an iphone SE 2020 and the browser version on safari last stable version.
Sounds like maybe this is an issue syncing between the two devices? Might be related to saving a redirect.