Opening and previewing PDF attachments in the iOS app


I attach a lot of PDFs to my tasks and in the iOS app it takes two separate taps to show the document. Tapping a PDF attachment first shows an Adobe PDF icon with an “Open File” button that downloads the document before it can be viewed. Similarly, on closing the document, you have to tap the Done button twice. Would it be possible to skip the middle step and display the document directly? Or at least could the downloaded PDF be cached and not require to be downloaded again the next time they are accessed?
PNG and JPEG images have a preview thumbnail in the tasks and open immediately on first tap. It would be great if PDFs behaved in the same manner (as they do in Asana in the browser).
Thank you