Tristana "buster shot" + Lee Sin "Resonating strike" Bug

Recorded this during a bronze ranked match playing as nautilus. Tristana used Buster shot at the same time as Lee sin used resonating strike, causing lee sin to be flung from Bot lane to Top lane. Think this might need fixing as it is pretty game-breaking to travel that distance. This is my first time encountering it.

Don't know what other information to add to this.