We have a user front end pro on our site to allow logged in users to upload resources. It's been working fine, but there's a strange issue with one particular PDF.
The PDF opens perfectly fine when it was sent to me originally, but when the the file is uploaded to the via user front end pro it can no longer be opened. Opening in a browser shows the PDF viewer chrome, but not the actual content and no error. Trying to open it via my local machine says the file is empty.
I can send the file if required but I can't make it publicly accessible.
There shouldn't be any problem like this. Cause the upload we use, is the same from WordPress backend and the file uploading also done via WordPress native functions. So I don't see anything wrong anywhere!