[Bug] Arcane mana buff bug with shield in offhand

[gruniu8]

Observed behaviour

when i have a shield with arcane studs in my offhand it gives me +50 max mana, but when i select a pickaxe with arcane handle it doesn't add another +50 even tho it says it should and when i pick any other item from my hotbar that +50 max mana from my shield is gone until i put it in my offhand again

Expected behaviour

it shouldn't take away +50 max mana stat from me

Steps to reproduce

get a shield and modify it with any arcane element, get any other tool and do the same. Put that tool in your hotbar (don't have it selected yet) and then the shield in your offhand. After you select the tool and select any other item/empty slot on your hotbar +50 max mana stat stops working

Crashlog

No response

Tetra version

6.5.0

mutil/mGui version

6.1.1

Forge version

1.20.1 - 47.3.12

Other mods

Iron's Spellbooks 3.4.0.5