The bug is that unaware Ability is ignored when a pokemon that have his Attack or Special Attack boosted do a critical Hit.

 

Examples of how it works:

 

Official Pokemon

Unaware

+6 4 SpA Togekiss Air Slash vs. 252 HP / 4 SpD Unaware Clefable on a critical hit: 156-184 (39.5 - 46.7%) -- guaranteed 3HKO after Leftovers recovery

Non Unaware

+6 4 SpA Togekiss Air Slash vs. 252 HP / 4 SpD Clefable on a critical hit: 616-726 (156.3 - 184.2%) -- guaranteed OHKO

 

You can check by yourself in Showdown Calculator

 

Pokemon Revolution Online

Unaware

+6 4 SpA Togekiss Air Slash vs. 252 HP / 4 SpD Unaware Clefable on a critical hit: 616-726 (156.3 - 184.2%) -- guaranteed OHKO

Non Unaware

+6 4 SpA Togekiss Air Slash vs. 252 HP / 4 SpD Clefable on a critical hit: 616-726 (156.3 - 184.2%) -- guaranteed OHKO

 

 

So instead of deal +0 (+50% damage from critical hit), it is dealing +6 (+50% damage from critical hit)

 

 

 

Info

Unaware

If a Pokémon with this Ability uses a damaging move or is targeted by a damaging move, the other Pokémon's stat stages are ignored during damage and accuracy calculation.

 

Critical Hit

From Generation VI onwards, a critical hit deals 1.5 times a move's normal damage.

 

From Generation III onwards, when a move scores a critical hit, the attacker's negative stat stages, the defender's positive stat stages, and the defensive boosts from Light Screen, Reflect, and Aurora Veil are always ignored. However, the halved Attack from burn is no longer ignored.

 

Source: Bulbapedia

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Greetings, xDesert.

Sorry for the inconvenience caused. Your report is correct, after testing it myself. Critical hits do not ignore any boosts on offensive stats such as Attack or Special Attack, but they stack up altogether.

 

In PRO's PvP case, when one of your Pokemon is at +6 as you said and you land a critical hit, it will not deal the damage it should (+0 + 50%), but something way bigger that can be game-changing (+6 +50%). Unfortunately, I cannot give you an Estimated Time of Arrival on the matter, but I can assure you that it is forwarded to the appropriate parties, looking for the problem. As of now, there is no way to avoid it.

 

Once again, sorry for the inconvenience. Let me know if you have any further questions on the topic. Have a good day!