Armature get light from the wrong side

[Basea]

I've got an issue, my object's armature gets light only from the back, when others from the front.
So, I can fix it by using Z Scale = -1, but then I get my armature parts in wrong order.
It happens with all types of light, appreciate any help.
Unity 2018.3.9f1
Dragon Bones 5.6