Act waypoints no longer working as checkpoints

Since the launch of Keepers League, the behavior of waypoints in acts has changed.
Waypoints no longer act as checkpoints - if you're running through a zone, get the waypoint, then die and resurrect at checkpoint you are taken back to the place you zoned into the area from, not the waypoint you activated.
If you zone into the area through the waypoint, it works as it did before.

The same behavior occurs when doing group leveling/party play, unlocking a waypoint and then having someone "swirl" to you does not place them at the waypoint.

Zone transitions and portals work the same as before, it just seems to be waypoints.