[dfxm12]

I don't think this is exactly what you are referring to, but there are apps, like feedly, where the back button brings you back to the home screen, and not back one screen. I don't know if this is because these apps are "ports" from iOS, or the devs are ignoring Android specific features to make it easier for themselves, or something else.

It's not Android's fault but it does frustrate me that different apps treat the hard button differently. FWIW I would rather have it this way than the way Apple handles it.