There is an extra joint on accessories. I'm not talking about the extra node which can be deleted in the export options "delete extra pivot node" I'm talking about there is a pivot joint for the accessory where you place it and then an additional joint where it is attached to. If I don't use "delete extra pivot node" on export then there is a 3rd joint for an accessory.

What should happen is that there should only be 1 joint for an accessory and that joint should be placed where the pivot is placed.