Bunshin effect extends far beyond expiration

[EliaBee]

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Date & Time: July 3, 2019 8:57 PST
Frequency: Always
World name: Aether
Character name: Elia Bee
Class/Level: Ninja/80
Party or solo: Solo
Area and coordinates: SSS dummy, The Fringes
Steps:
1. Apply Huton and achieve 80 Ninki.
2. Use Bunshin.
2. During the Bunshin buff window use only Aeolian Edge and keep pressing on cooldown.
3. When the Bunshin buff expires after 15 seconds keep using Aeolian Edge. You can see two Aeolian Edge attacks continue to be applied on the striking dummy. The two attacks continue until the Huton buff falls off.

This also works with Shadow Fang and Armor Crush.

The follow url contains a video recording of this bug:
https://gfycat.com/dependenttidyfruitbat

Connection Specs
- Type of internet connection/provider: Century Link Fiber

■ PC Specs
Intel i7 3770k
Nvidia GTX Titan xp