Summary:
When the /replaceitem command is used, and any 3D block is puted in the offhand slot, the item is in an incorrect place (the item is in the left). 

Steps to reproduce:

1. Take any 3D block to off-hand.
   for example:

/replaceitem entity @s slot.weapon.offhand 0 enchanted_table

Observed results:
The block appears near the left side of the screen.

Expected results:
The item will be displayed in the left hand symmetrically right.