Game Mechanics: Levitate doesn't work..

[Lazortag]

So I've noticed that sometimes when I use levitate, I still float if I fall off a high surface, but I float down and down and eventually touch the ground, rather than floating above it (for instance, I should always be able to float above water, yet I can't because of this bug). If I'm zoomed in as much as possible in 1st person view, and face up, I can keep myself from going underwater when levitating above water (this is kinda similar to how swimming works, actually).

Sometimes levi works as it should in the third person point of view (the one I use for aoe kiting), but sometimes it doesn't. What causes it to work only sometimes, and when can this bug be fixed? Thanks.