Unfortunately I’m not sure how to troubleshoot this.
I assume that you’re producing this PDF from inside your authenticated account on the site. So I can’t access the link myself directly. Additionally, as I stated in my previous message, I can copy the link address given directly into my address bar and view the PDF without issue using the same version as you.
I’ll have to do some digging on this. In the interim, you can use an extension to view the PDF file with. For example, I’ve installed the Kami app to view PDF files in browser (there are several PDF viewer extensions you can chose from that will work, I just happen to know that Kami is confirmed to work without issue). If I right-click a link to a PDF file, I’m offered the option to open in Kami: