utils.downloadFile() is working well with the PDF, just forces extra steps on the user to get it printed.
Thanks. I have not messed with any JS sandboxing so am unfamiliar with it limitations. The iFrame is letting be break free of the sandbox, so I assume you could basically do the same thing I did to get the browser access to the PDF. Of course as I said I was unable to get the print dialog to stick around long enough to actually print, but hopefully I was just ding something wrong.
Not everyone is savvy enough to try and make a custom component to do that job, so I would highly recommend investing some treasure in adding general printing/reporting capabilities to Retool. Maybe integrate Carbone or some other handlebars based framework? I'll do a Feature Request post.