I'm quite annoyed that it's impossible to turn off seeing underground features in OpenStreetMap. That blue line, is that a shortcut I can walk? No, it's a river in pipes! Even in apps made to navigate, even when you select navigation on foot or bicycle, they still all (that I've tried) show you highway tunnels! I can't go there! They are only a distraction, often standing more out on the map than the roads I can actually use (broad, orange vs thin, white)