@asianpanorama – that’s not something we can control, currently. Right now, that’s how most browsers interpret files ending in .pdf – they choose to display them instead of forcing a download.
However, we’re working on a new way to download files and hopefully, we’ll be able to force-downloads common file types, such as PDFs in the near future.
Thanks for taking the time to leave a review here – highly appreciated!
/Cristian.