I have this odd problem that occasionally happens. I am increasingly building my library by downloading a pdf, dragging it into the Zotero pain, and then retrieving metadata for it (particularly since Science Direct doesn't seem to scrape).

I sometimes get this problem where the PDF file saved on my (Mac) Desktop shows up in Zotero as a completely unrelated webpage (but one that I happened to view earlier), rather than the desired PDF. The only way to avoid this is to close out of Firefox.

Any insights into how to fix this?

Thanks.