The engine is unable to Level that has a Blueprint actor with a child actor component that has a particle system component. The follow message pops up:

World /Game/LevelName.LevelName is in use.

Running the editor with '-NoLoadStartupPackages' may help if the object is loaded at startup.

External referencers of World /Game/Level.LevelName:
GCObjectReferencer /Engine/Transient.GCObjectReferencer_0 (root) (1)
0) [[native reference]]

Tested in 4.22.3 (CL - 7043647), 4.23 (CL - 8386587), 4.24 (CL - 9485528)

Steps to Reproduce

1. Download and open the attached project
2. Delete the NewMap Level

Expected: The NewMap level would be removed from the Content Browser
Result: An error pops up

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Won't Fix
ComponentUE - Gameplay
Affects Versions4.
CreatedOct 9, 2019
ResolvedAug 27, 2021
UpdatedAug 27, 2021
View Jira Issue