[yellowbkpk]

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!

[3036e4]

I kind of agree and see what you mean, but what I described happen often that I forget where I came from and have no idea that the PDF I read was opened from some other app.

It's part of what I mentioned in another comment, that BACK button can feel random. "Did I open this PDF from within the PDF viewer or from some other app? What app?" Instead of the BACK button having a predictable, known, function, it depends on some hidden state.