Now here's an obvious and puzzling new bug: Z3 animation is broken! Link no longer animates when he walks around, he just stands still all the time. This occurs in quests generated with older betas as well as brand new ones made in beta 15.
After some testing I've concluded that all other animations seem to be working fine. It's as if the game is forgetting to check whether Link is supposed to be responding to the movement keys, so he just stands in his idle animation even when walking.