Niagara Particle Collision works in Blueprint but not Scene


I have an Actor blueprint with a few objects nested inside. I have several particle emitters and I’ve created some colliders within the actor too. They simulate correctly inside the blueprint window, but they seem to ignore all collisions when the blueprint is dropped into the World Outliner.

Has anyone else experienced this? I feel like I must be missing a checkbox or parameter somewhere.

Turns out my problem was completely unrelated to the blueprint. I had a giant intersecting collider in my scene from a dummy landscape in my scene that was wreaking chaos on the physics.