The onky controls my navigation buttons cover is the share/download/etc buttons that appear when you click on an image and swipe up to bring up the panel.
And yes, it is super annoying. I can't even seem to 100% disable swipe actions. I do not want to swipe to do a god damn thing other than move the page up or down. Tired of accidentally saving or voting on things becsuse I didn't move my finger vertically enough and it registered as a left or right swipe.