gargoyle stoneplate bug

i tried this with battlecast cho gath in practice mode and happened to stumble across this potential "bug" if you use gargoyle stoneplate more than once with cooldowns automatically reset it stacks on itself infinitely (so far I got up to 1 million health). I know this is impossible to happen in actual pvp but it would be nice if this was fixed where it didn't stack on its own active

p.s thank you for all you have done for us players of LoL. I myself really appreciate all you have done as I have been a player since the very very beginning