[Gameplay] Multiple Lux Lasers Protobelt Bug

I was in a custom game against friends today, playing Lux and testing out an experimental build with Hextech Protobelt. Multiple times during the game, I managed to shoot more than one laser, usually two at a time. I managed to get up to four simultaneously.

How to replicate 100%:

1. Buy Hextech Protobelt on Lux.
2. Dash using Hextech Protobelt in a target direction.
3. Press R several times in different directions.

Result: Lux will fire one laser in the direction you dashed in using Protobelt, and then fire another laser at the current location of your cursor. Pressing R faster results in more lasers. Only the last laser does damage.

I looked it up on youtube, and it turns out that Redmercy did a video on it.

https://www.youtube.com/watch?v=ewWBUU_FueE