So this is probably just me being old and stuck in muscle memory, but maybe it's worth fixing at some point. I use the compact view, so when a picture catches my interest I click it to blow it up. With the image enlarged to cover my screen, and anything not covered by the image filtered to be dark, pressing the back button doesn't close the image, it immediately exits the feed and keeps the image open. I know I can scroll the picture away, but pressing back is just the first thing my mind does, and then I lose my place and have to go back into the feed and scroll down trying to find my spot. Not a huge problem in the grand scheme of things and my hands will learn the new defaults, but closing the pictures first seems like an easy fix.