Aye the hopperhock when converted into a floating version just doesn't seems to work anymore.

Also out of the topic I was wondering it is possible to make a hopperhock run without mana when it's close to a manapool, I mean the drops coming a small range and the hopperhock could pick them up without mana usage but to do that I have to bind it to an empty manapool. Is there any other way to do so?

Can't reproduce.

I'll look into it. And yes, you have to bind it to an empty manapool.