When llPushObject is used from an attachment to push the agent wearing the attachment the push fails to move the agent if the push value is above some NEW cutoff.
Previously it was possible to instantly move an avatar to any location in the region using llPushObject. It is now only possible if the destination is very close.
While I understand how llPushObject can be abused, there is no advantage in reducing it's effectivness in attachments where it is being used as a sudo-teleporter.