z201205 That’s a technical explanation but doesn’t address the unexpected behaviour. Tapping another part of the screen is non-intuitive. There must be a way of using the back button to dismiss these
It's not an unexpected behaviour it is the expected behaviour.
When you open the follow options, select an option there or tap the space above it and the menu will close.
When you open the hamburger, select and option there and you'll go to that page, tap to the right of the menu and it will close.
These are not bugs, this is how it should work.