It's interesting that this feels awkward to you, because when apps don't function this way it feels broken and odd to me. When I tap a PDF attachment in an email I expect the back button to go back to the email I was just viewing, not the list of PDFs on my phone. If I wanted to view all the PDFs on my device, I would start at the PDF viewer and tap into PDFs from there.
I wonder what experience made this feel more awkward for you (and conversely, why it feels more natural for me). What a weird/complex world we live in!
I wonder what experience made this feel more awkward for you (and conversely, why it feels more natural for me). What a weird/complex world we live in!