Hello I recently upgraded from 21.05 to 21.11 at which point I noticed that some locally stored cover images would fail to display on the full details page for a biblio. The cover does always display under the Picture tab on the details page. The images display normally in the listing of multiple results, and images downloaded using Coce display properly both in results listings and in the full details page for the biblio. * Here is an example of a biblio with a properly displayed local cover image: https://katalogo.biblioteko.ca/cgi-bin/koha/opac-detail.pl?biblionumber=164 * .and here is one that will not display the image: https://katalogo.biblioteko.ca/cgi-bin/koha/opac-detail.pl?biblionumber=2189 * Here is a multiple results listing page showing a cover for the title above whose cover fails to display in the full biblio: https://katalogo.biblioteko.ca/cgi-bin/koha/opac-search.pl?q=su:%22Holmes%2C %20Sherlock%22 I have checked the logs, which give no clues at all. I have also tested by removing the custom CSS and JS I have in OpacUserCSS and OpacUserJS and restarting Apache - this does not help. Recreating the biblios on the PTFS sandbox doesn't replicate the issue - so it does seem to be something to do with my set up. Hope this is clear - any help would be gratefully received! Thanks Martin