Version

1.20.1-1.6.5.1
1.21.1

Problem

src/main/java/com/sammy/malum/mixin/ItemStackMixin.java
Scythe Proficiency now is damage multiplier, but tooltip still increase 0.5 Attack Damage per point.
src/main/java/team/lodestar/lodestone/mixin/common/ItemStackMixin.java
Magic Damage is incorrect due to Magic Proficiency.

Example

Soulstained Steel Scythe has 4 Attack Damage and 4 Magic Damage.
In tooltip:
4 + 1 * 0.5 = 4.5 Attack Damage (Default Scythe Proficiency is 1)
4 * (1 + 1 * 0.1) = 4.4 Magic Damage (Default Magic Proficiency is 1)

If I equip full set Soulhunter Armor, I have 1.6 Magic Proficiency.
In Malum, dealing 4 * 1.6 = 6.4 Magic Damage.
In tooltip, 4 * (1 + 1.6 * 0.1) = 4.64 Magic Damage.

This is fixed in the latest hotfix for 1.20