I first experienced this issue in UE5.
It is happening for each emitter in the Niagara system, and I did not have this issue in UE4, so the same work is showing different results.
It doesn’t make sense and feels like a bug to change a common rule in a 3D program just because of a different version.
It’s terrible to have to fix all of your years of work because of a bug like this, so makes me question whether UE5 is a reliable engine.
I hope this issue is resolved.