I have one mobile device where my partially transparent Sprite3D never cast a shadow.
I tested on two other mobiles and my laptop without changing anything and the shadows are there.
I tested with Godot 2 and Godot 3, same result.
If I deactivate transparency I have the rectangle shadow, but that is not what I need, I need the correct shadow that comes when Alpha Cut ist set to Opaque Pre Pass.
Other meshes cast shadows on the device like e.g. the TestCube in Godot2
Do you have any idea what could cause this behavior? The phone is a Oukitel 6000 Pro.