The scepter is impossible to use in the left hand when the right is unarmed

I noticed something today that frustrated me - a sheld that is one-handed can be equipped in combinations:
- weapon in right hand, shield in left
- no weapon in right hand, shield in left which allows you to use concoction as an unarmed skill and allows you to use shield stats.

And now the scepter (the essence of the bug) can be used in the configuration:
- weapon in right hand, scepter in left hand (with emphasis in left)
- scepter in right hand, shield in left.

It is not possible to use the scepter only in the left hand as in the case with a shield. It is always automatically equipped in the right, although in combination with a weapon the scepter goes in the left hand.
As a result, my plans to benefit from playing unarmed in the right hand (concoction) and using the scepter in the left have been effectively put on hold, especially since the field glows green in both the right and left hands when placing the scepter

I saw the potential of creating an Unarmed + scepter build and it seems to me that the game should allow me to use such a setup, especially since it is possible to use the scepter in the left hand as I wrote above in combination with a weapon.