Fix the Act 3 Waypoint

Why is the waypoint disabled in act 3 after you defeat the campaign? Running Chaos Trials forces you to that town on hearth and there's no waypoint accessible. There's zero reason for it to be disabled. Even if there were a story reason to disable it (which is asinine), why is it still disabled when you're through the campaign? This issue has been reported since launch, how is it not fixed?