There was a regression related to Particle System Components (this was fixed before on older versions of Unreal, but came back to UE4.18 and UE4.19)
Particles Components from pooled Actors can’t “rewind” emitters because Unreal will ignore a certain function call if any of the Particle Component’s parents is hidden/innactive…
I’ve fixed that again and will submit update 1.5.5 to Epic:
