Sion vision glitch

i have had this occur more than once, essentially very rarely Sion becomes visible when charging his Q in the bush, then immediately becomes invisible as soon as it ends. It is certainly not intended as this is my main strategy used playing support Sion. If you think this is caused by the model moving forward a few pixels while charging Q to move outside the bush I am pretty sure it isn't as i have been much deeper in brush and still had this occur (although i have no video evidence to prove it so take that as you will). if this isn't fixed soon i will find the address to the closest rioter and hide in a bush near their house with a large axe.As far as I know this glitch doesn't happen in real life.