This might be not related to bugs at all, but after I've upgraded 2018.3.0b2 -> 2018.3.0b3 seems like it's no longer returning any bones. Also, I've upgraded to 2018.3.0b4 and it's the same result. I've also lost some of the prefab references, can this be a cause of this? If so, can someone point me where to assign those? Or, it's because of the changes to the model importer? Some help would be appreciated.