So, specially in case of The Rot; the special imput just seems to be very janky, after absorbing a pearl or a spear, I hold special but just nothing happens, other times I try to use it and it works but its very unconsistent.

I don't know if this has been patched or not, I tried to reinstall the mod but the problem is still there, so... I have no idea if the problem is on me or the mod, cause for everyone else Ive seen play it works just fine.