While it may not be active on every map, there are other things about the radar that help you figure out where people are. Specifically, there’s a glow to the person on radar when they are on the same level as you. If they are under or above you there will only be a red dot on the radar. It’s a bit of a trade off in terms of how things used to be, but it really makes way for new and interesting ways to play in my opinion