Smoke not rendering in specific area.

I made a rocket animation where it soars into the sky and smoke trails behind it. However, all seems fine and dandy as it takes off in the render, but in the middle of the flight a shape appears to cut the smoke out of visibility but not the rocket. It’s like there is a mask that explicitly cuts out the smoke in that are and then it resumes normally. Hope you guys can help! (VIDEO BELOW)