[1.20.1 Forge] Damage buff from Modifiers doesn't work

[NotCodly]

The weapon that has a "Deadly" modifier doesn't add the Attack Damage buff it is supposed to. Other modifiers like "Speed" do work as intended. also, "Attack Speed" seems not to work as well but I don't have proof for it.

This is a comparison screenshot for the Attack Damage bug

as you can see, the attribute didn't work because the Attack Damage of the sword is still 8 while it is supposed to say 9.2 according to the calculator