Oil barrage is unable to hit enemies at slight elevation difference

Oil barrage is a ground targeted projectile, but it fires forward and has a minimum range. For some reason this results in the projectile colliding with the ground whenever there is a slight elevation, such as stairs or a ramp. Any enemy that is at a slight elevation difference won't be hit by the projectile or explosion and you cannot fire upwards at all. It's very frustrating when the mob is right in front of you but you can't hit it.

Please make the ability able to target areas with different elevation from you.

Yes, thank you. Its been very frustrating. I have the exact same problem with this skill. Needs improvements

I've used oil barrage a lot and see this same issue, but just in general when I am doing an empowered oil barrage sometimes it nails the enemy and tracks to the enemy and sometimes it just won't track the enemy, even firing in a different direction. Unfortunately since this is a bossing skill this often results in the boss killing me after my miss attempt and vain scramble to rebuild power charges to try again. This is most evident in my fights with Babala in fortress and can happen at distance and at point blank range boss staggered or not. I also have an issue that despite having power charges the channeling "sputters" with almost no projectiles and other times it is like a fire hose for what feels like 5-10 seconds...extremely inconsistent. On targeting, I am using precision II, have 2343 Accuracy rating on tool tip for skill with 100/100/94% Chance to hit at 2/5/9M respectively.