I am facing the same problem here, and I can't find any solution anywhere. I will try to reset everything and see what happens.

Update: the previous extension is no longer working with current versions of the browser. To fix that, I have found a new updated extension: you can add it from https://extrememods.net/ (It uses the same procedures as the previous one, but it is less laggy).

Hello, I had the same problem (not really a problem if you don't bother to download the PDFs, read them and delete, which is quite a lot if you plan to read plenty of them) but, I have found a useful solution after search a lot: It is the simplest: you add the extension of FreeGenerator (I tested it and it is clean) and the extension previews the PDF in another tab.

Meme probleme. et je ne trouve aucune solution sur google. svp, écrivez un tuto si quelqu'un de vous a trouvé une solution. Merci

I am facing the same problem here, and I can't find any solution anywhere. I will try to reset everything and see what happens.