When using Ral, Izzet Viceroy, if I have a Major Flux of Genius token and cast Roil Eruption on a target with more than 3 health, then send the damage from Genius at a different target, then select yes to the kicker prompt, the kicker damage gets directed at the target I selected for Genius, not the target I originally targeted with Roil Eruption.
If I were a betting man I’d say it’s related to https://forums.505go.com/discussion/86837/tend-the-pests-dack-fayden-vanguard-interaction-investigating (and the links within) and the problems the game has keeping track of “The Stack”.
Hello guys,
Thank you for all the information provided, this issue will be investigated!
If you have any additional information that you consider relevant, please don’t hesitate to send me 
Rebeca.