Kha'Zix's R Stealth cancels Instantly after cast

This bug has actually game breaking in some very important fights. -When you use an auto attack as Kha'Zix, and then after Activate R next to an enemy and right click them by accident you will instantly come out of stealth even though you did not even have an auto attack up..... -I feel that this wasn't supposed to be part of the mechanic and should be fixed so that if R is used and you have just used an auto attack before stealth (your passive)... right clicking the enemy champion should not take you out of stealth until either the stealth time is over or your next auto attack is available.

-Please note that the bug only happens if you right click instantly after activating R

-Please fix this Riot. I am a Kha'Zix main and this bug has cost me a ton of fights and one of my ranked games.

                                                                                                                                                                                                            - VoidZix    <3