Using a riptide trident with an elytra causes you to fling upwards at great speeds.

My completely uneducated guess on what is wrong is that the mod is somehow swapping the Horizontal and Vertical velocity values when using Riptide AND an elytra, (but not with riptide by itself?).

EDIT: This bug, I believe, is actually related to issue #38. The problem is that the camera roll jolt actually doesn't update the angle the game thinks you are at, causing a desync between what you see, and what the game thinks you are looking at. This would explain why I was being launched higher, as I would move my camera up to compensate, which made the game think I was looking up, while I was not.