Imbuement Tempering not giving correct Charge amount

When using Tempering to gain additional Charges of Shadow Imbuement, there were two Separate Items shown to be giving +2 Charges to Shadow Imbuement. But the Shadow Imbuement Tooltip only shows 5 Charges, both on the Ability & when it’s Activated (base 2 Charges, plus the additional 4 Charges SHOULD grant 6 Charges right?).

I also encountered similar problems!!!

That’s happened with lots of skills. They didn’t display the correct value on the item, which you then got in the skill tree.