_V3.14
Assault and Battery
Fixed a bug where, if Vi's Banshee's Veil is popped at same moment Vi casts Assault and Battery, Assault and Battery would cause Vi to be locked into her charging animation.
V3.8
Blast Shield
Fixed a bug where Blast Shield's cooldown at higher levels was 1 second longer than intended.
Vault Breaker
Fixed a bug where casting Vault Breaker while targeting an enemy would cause Vi to stop moving.
V3.6
Vault Breaker
Fixed a bug that caused Vault Breaker to become uncastable after activation.
Excessive Force
Can no longer be cast while charging Vault Breaker.
V3.03
Stats
Base attack damage reduced to 54 from 58.
Vault Breaker
Now goes on a 3 second cooldown and refunds 50% of the mana cost when interrupted instead of fully refreshing the cooldown and refunding 100% of the mana cost.
Denting Blows.png Denting Blows
Damage reduced to 4 / 5.5 / 7 / 8.5 / 10% of target's maximum health from 6 / 7 / 8 / 9 / 10% of target's maximum health.
V3.02
Assault and Battery
Fixed a bug where the crowd control component of Assault and Battery was ignoring spell shields.
V3.01
Updated recommended items.
Vault Breaker
Fixed a bug where Vault Breaker's area of effect was inconsistent at the end area of the dash
Fixed a bug where Improved Recall mastery Improved Recall was refunding Vault Breaker's cooldown and mana cost
Excessive Force
Fixed a bug where Excessive Force could fire multiple times if used on an invulnerable target or while blinded
V1.0.0.154
Vault Breaker
Fixed a bug where Vault Breaker would sometimes not refund mana or cooldown when interrupted.
Fixed a bug where interrupting Vault Breaker would sometimes render Vi unable to cast spells.
Fixed a bug where Vault Breaker's stun duration was sometimes shorter than intended.
Fixed a bug where Vi would sometimes stop attacking after hitting a champion with Vault Breaker.
Excessive Force: Increased the responsiveness of Vi's attacks after using Excessive Force.
Assault and Battery
Fixed a bug where targets could cast spells after being knocked into the air.
Fixed a bug where characters with stealth could cause Assault and Battery to miss.
Fixed a bug where damage was not applied to targets immune to disable effects. _
All the bugs of Vi upon release. She had so many problems built into her Vault Breaker and Assault and Battery that became unnecessarily hard to play. and made her playrate and winrate plummet. After the fixes were fixed she was indeed a tad too strong and was nerfed on the next patch. Which was the 8th by then.