As you know in update 1.15 we can launch fireworks from dispenser not only vertically but horizontally too. I tried to do it and everything is fine except the texture of firework. It looks really strange and rotates depending of your look direction. Every time you look at the texture it turns back to you. It's not really important but looks horrible.

Here is a video proof: https://www.youtube.com/watch?v=oooZij6krkM&feature=youtu.be