There is a bug since 2016 year. When collision is not root - its dont work correct. (Projectiles flying through walls) Like in this question: https://answers.unrealengine.com/que…#answer-934368
But if i want to rotate collision capsule, i must have SceneComponent as a root. If capsule is a root, then i can`t rotate capsule
This is a very common bug. Described in many topics. For example here too Projectile collisions not working with arrow component as root - World Creation - Unreal Engine Forums