Huge issue with bone storm.

When I first got to the colossus boss fight in titan grotto, I couldn't understand why can't I hit him 2/3 of the times. And then when I do hit him, sometimes it does very little damage.

So I started looking at what my bone storm projectiles are doing. And it turns out that they fly into the ground in front of the boss.
I couldn't figure out where should I be aiming to make them consistently go into the boss, instead of the ground, regardless of aiming settings (target cursor or target ground) in the game options.
I eventually killed the boss anyway... but the issue didn't end here.

I later noticed that bone storm target the ground ALL THE TIME. If I release it while my cursor is in front of my character, it just shoots everything down and, needless to say, it doesn't hit anything that I want it to hit.
It completely ignores targeting enemies. And unlike other spells that fly over the terrain, bone storm always gods into the ground.

This makes the skill sooooo jank to use. I always have to target at the edge of the screen if I want it to have any range to speak of and hit enemies.

Here's a demonstration:
https://www.youtube.com/watch?v=3pRYzP6Czpw

TL;DR: Bone storm ALWAYS goes INTO the terrain, instead of flying OVER the terrain like other projectile spells, making it very jank to use, especially on some bosses.