Pokemon Go Dev "Actively" Fixing Tracking, Catching Issues

Niantic has heard your issues with recent Pokemon Go bugs, and is actively working on resolving them.
The developer posted a lengthy blog post that largely focused on why they shut down third party trackers (more on that in a bit), and in it mentioned the problem with Pokemon Go's "Nearby" functionality. Originally the game had a three-step tracking system that allowed players to gauge how close they were to a Pokemon. But when a bug caused all Pokemon to stick at being a three-step distance awa