When it was requested, you did not give us the opportunity to preview PDFs, you FORCED us to preview them. I do not and never want to preview PDFs, as I ONLY use my pdf software to view PDFs. Now, you MUST preview it before you download it. I have had nothing but problems by closing protonmail entirely due to your poor interface with the PDF previewer closer when I try to close the PDF, I keep hitting the "close preview window" button, but it's also the "close PM" button. I frankly hate this new "feature," which borders on a bug and makes PM much harder to use than previously - for my situation.