The first bug will be triggered if you switch the potion with fast, it will permanently reduce your speed stat and after you kept doing that, you could get a min speed stat

The second bug will be triggered if you switch to the other potion quickly after you threw a potion, for example: If you threw a Blue potion, then quickly change into the Green Potion, after the potion hits the floor it will make a pool of creep

Well the big problem is the 1st bug, because it reduces the speed stat permanently, please fix it.