So I kinda figured out this one. Though there still needs to be a bug fix on it regardless. When you enter the camp after the goblin fight, Wyll is walking toward the kids. If you save BEFORE he reaches the kids, it will save his location and he will not move forward on a reload. If you choose to save right after the goblin fight, make sure you give wyll enough time to get to the kids so he doesn't get stuck.