[GAMEPLAY] Master Yi Health Potion Attack Speed Bug

EDIT: Apparently its to do with devourer

I play Master Yi a lot, so I knew something was wrong when I was trying to auto attack minions/champions and it was taking ages for it to attack. I looked at my attack speed and noticed that it was going down, so I opened up the replay and recorded a clip of the attack speed whilst taking Gromp and then Dragon.

Whilst watching the recording I noticed what was wrong. As you can see in the video I start attacking Gromp at level 7 with 1.12 attack speed and when Gromp is almost dead I use a health potion and my attack speed goes to 0.8(Master Yi's base attack speed). I then attempt to auto attack Gromp and because my attack speed is lower than I think my auto attack doesn't go off and I start to move away, resulting in me wasting time to auto attack Gromp again.

I then move towards dragon and just before I get there it resets my attack speed to 1.1(don't know why this happened and its lower than it was at level 7?). Shortly after starting to take dragon I use another health potion which results in my attack speed going to 0.8. I use my ult and it goes up to 1.3. The ult wears off and it goes back to 1.1, knowing I will need more health to finish the dragon I use another health potion whilst puts my attack speed down to 0.8.

Hope the detailed information helps. Dablakbandit