Sion vs. Jungle [BUG]

When you attack with the Q of Sion, to a blue or red buff, it might reset the fury charges for no reason. It's been happening since season 6 I think. I've reported it a few times but still isnt fixed today!

Here you can see a video of that bug. (This video isn't mine, it's just for showing purposes): https://www.youtube.com/watch?v=WpPh-RloQGc