This is a bug that has been floating around for a few years actually, I had assumed it'd just get fixed.

Not much to say about this, but after throwing a crush, if you hold two or more movement keys, sometimes the crush will not detonate and will instead play the sound you hear if you try to use an ability that is on cooldown/when you have no mana. It doesn't happen every time, but it happens enough to be an issue.

Maybe it's because no one plays Scylla.