Safari only shows the first page of PDF files in IOS 14.1

The problem has appeared only with IOS 14.1 update - now, when I download and try to open a PDF file with Safari, it will only show the first page of the document, while all other pages remain blank. At first I attributed it to connection issues - I was underground when this happened for the first time, so I figured the files were not downloaded correctly. But then my colleagues, who also updated to IOS 14.1 and, like me, have had no issues previously with PDFs in Safari, reported the same problem.

Can't stress it enough that for 9 months of me using Iphone (Xs Max) it was very, VERY handy to immediately open PDFs from Safari as my job often requires it. Now it's only possible to download and open files in Safari, then transfer them to Adobe Acrobat, where they can be properly read. My friends and colleagues also never had this issue before, though I've just found that a lot of people actually had it permanently in previous versions of IOS.

Any ideas on how to fix this or maybe speed up the process of properly opening PDFs?