Tutorial: Your First 60 Minutes with Mass

I’m wondering if someone encountered the same issue I’ve got. I simply tried to follow this basic tutorial but got issues with the simplest debug Cone. I’m using UE 5.5 for a pet project.

I’ve set Entity with only 2 traits

  • Debug Visualization with Cone mesh from the engine.
  • LOD Collector as recommended in this thread.

The problem is cone meshes aren’t visible until… clicking anywhere outside of game viewport. Clicking anywhere in editor tabs, or alt-tab “fixes” the issue. Initially, I thought it was a problem with my pet project, but it doesn’t work the same way in the clean project I just created.

Tried debugging

  • Set 3 processors as bAutoRegisterWithProcessingPhases=True, after the tutorial. No change.
  • Set breakpoints in code. It looks like Mass Debug Visualizer is created, and entity set. Entity instances are spawned and Instanced Static Mesh got instanced added.

However, in the pet project Mass Debug Visualizer isn’t visible in Outliner until clicking in editor - outside of the game viewport.

That’s the entire entity setup.

Any ideas, what’s causing it?