Firefox prompts user with "What should firefox do with this file?" window for iframe tags in HTML
I am trying to include some PDFs in iframe tags on my website. Previously they appeared as normal, embedded within the page. But now whenever the page is loaded firefox prompts the user with the "What should firefox do with this file?" window or whatever the default action for the PDF file type is. It does not display the content on the page and the iframe is just blank. The iframes still work on chrome so it does not appear to be an issue with my code.