Game Client

Summary:
The skill "Shard of the Glacier" can cause electric skills to deal negative damage, resulting in healing the enemy. This bug occurs consistently under specific conditions, particularly against enemies with multiple health bars or the skill "Enhanced Resistance" which these enemies always have.

Affected Targets (confirmed):
• Bosses
• Punisher enemies
• Golem

How to Reproduce:

1. Use Shard of the glacer (SotG) on a target with multiple HP bars.
2. Wait for the ice effect to thaw (3 sec) without using an electric skill during the window.
3. After the window has passed, cast an electric skill (e.g., Staff of Thunder).
4. Instead of taking damage, the enemy is healed.
   •In some cases you have to use SotG multiple times in a row in order for the bug to occur.
   •Once triggered, the target will always be healed by electric skills for the rest of the fight.
   •This effect persists until the target is killed with non-electric damage.

Test Setup:
•Character: Water/Electric SM
•Eq, skill levels and stats are kept constant across all tests.
•Staff of Thunder: Master
•Shard of the glacier: lvl 10
•All damage values are non-critical and without any active buffs/debuffs.

Test Results:

Target 1 - Punisher Beast Vincento
(Requires 2x SotG in a row to trigger the bug)
• Baseline (Only SoT): 5499
• Amplified (SotG -> SoT): 19245 (+250%ish)
• Bugged (2x SotG, then miss timing): Heals 8247 (-250%ish)
• Bugged stacked (3x SotG): Heals 21994 (-500%ish)
This shows unintended stacking of amplification, despite the skill not being stackable.

Target 2 – Punisher Icicler
(Requires 2x SotG to trigger)
• Baseline: 6983
• Amplified: 20247 (+190%ish)
• Bugged once: Heals 6283 (-190%ish)
• Bugged twice: Heals 19549 (-380%ish)
Same bug behavior, with different amplification multiplier (likely due to resistance differences).

Target 3 – Punisher Merman Ale
(Only 1 SotG required; amplification never works, only bugged output)
• Baseline: 12182
• Amplified (no timing error): 12182 (No change, always blue damage numbers so prob bug active)
• Bugged: Heals 1931 (-116%ish)
Amplification fails completely, you cannot increase your electric damage with SotG on this target.

Target 4 – My Primadonna
(for reference, no resist)
• Baseline: 4285
• Amplified: 8355 (+95%ish)
This is proper intended and I couldn't get the bug to occur.

Target 5- Dragon with Thunder Shield mastered
(No bug trigger but helps me analyze damage scaling)
• No Thunder Shield active:
• Baseline: 3922
• Amplified: 7647 (+95%ish)
• Thunder Shield active:
• Baseline: 2589
• Amplified: 6314 (+144%ish)
This shows that amplifications adds a flat amount (3725) regardless of resistance.

My Hypothesis:
From all the above tests, the issue appears to be how amplification is applied in relation to resistance.

If we assume the damage formula is something like:
Final Damage = (Base Damage x Resistance Modifier) + Amplification Amount

Then against high-resist mobs, the base damage is reduced heavily, but the amplification stays constant. This can result in:
• The total value becoming negative, especially if resistance reduces base damage below a threshold.
• Negative values causing the target to be healed instead of damaged.
• The amplification stacking when it shouldn't, further worsening the issue.
My best guess is that its either a integer overflow or a logic bug.

This really hurts the playstyle of Water/Electric users and makes something that I deem as quite important, non functioning vs the mobs that the playstyle even without the bug has the most issues with.