Thank you for following up on this issue, @Emrick. Your last screenshot, like the other two, shows a search result. To help the team investigate whether this is a search indexing issue or another issue that occurs before search, we first need to see if the PDF is present in your library when you don’t search for the paper.
Does the “Analysis of representations” paperclip with the number of attachments appear in the list of papers in your library without applying a search for the paper?
If it is too difficult to find because you have many publications, you can also try to find that paper using the “Has PDF” filter, again without running a search for it. Does the paper appear with attachments there?
Alternatively, you can look at the “No PDF” filter and let us know if it appears in that (again without running a search; while you did this already, I’m not sure if you did this after applying a search or not).
Screenshots of these cases would also help the team.