[GAMEPLAY] Zed bug leading to increased attack damage

When playing zed you can get a lot of attack damage from a current bug it last about 3 seconds,

You can recreate this bug by using your w a few seconds later you can get an increased amount of attack damage roughly 1/4 of the amount from the w passive although number have went higher in a regular game with baron and elixer of wrath. It happens about 95% of the time but not always the same amount of time into the use of w (usually halfway through the ability to recast timer)

images attached show the change in attack damage.