In Sprite3D, filter the property “alpha”. You’ll see one option available, Alpha Cut. Change its setting to “Opaque pre-pass”. This should allow sprites to work. If it doesn’t, your DirectionalLight settings may be messing it up. In my case, it was, so I changed the Bias property within DirectionalLight to 0.1 (apparently the default) and that fixed it. I hope this helps, sorry it had to come almost 2 months late.