PDF pdf progress bar is not coming properly

PDF progress bar should be proper which must show progress 1% to 100%. No progress is running in loader only blank loader is showing.

check below given empty loader image:


Does the document ever finish loading, or does it just get stuck there forever?

Would you be able to send us that document?


Document got rendered in the browser but loader is not properly showing.

Does it happen with just that document? Or every document?