a) accidentally tapping the Feeds button in the corner of the screen with the heel of my palm
Apollo's solution to this was to allow swiping left from the right edge to go "forward" to the page that was just closed. We've got an issue open for this feature here, but unfortunately this feature is rather tricky to implement so it's unlikely to be added anytime soon.
b) accidentally tapping the article body (either while actively scrolling or just holding my phone), which collapses the post.
We'll add a setting to disable collapsibility of post content in this week's TestFlight (issue here) ๐