About two weeks ago, the preview of pdf-files attached to cards stopped working.
The old files attached before this date is working fine, but all new just show up as a blank page. If the document is multiple pages, it previews a corresponding amount of blank pages.
If the document is downloaded, it shows up just fine in adobe reader or other applications.
I've tried previewing the documents in both browser and the Trello app, with the same result.
Is this a bug introduced in Trello, or could there be an unsupported pdf-file created that generates this issue?
