1000's of repeatng partial photos appearing on Photos on the nextcloud web interface

I’m running Nextcloud 28.01. I have 1000’s of photos appearing in “Photos” on the Nextcloud web interface. They do not appear in photos under Files on the web interface (hidden files are set to show), or in Files on the Windows 11 app. The photos are of my contact photo and seemingly bits of icons and other random nextcloud graphics and some background photos that I have in a subdirectory under photos called Backgrounds. I have attached a screenshot. Also, other users can see the same as me, in other words, these self generated photos are visible to other users.