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Emission of the Particle System is not visible when the Particle System is manually simulated



How to reproduce:
1. Open the user’s attached “” project
2. In the Hierarchy window, select the “Orbiter” GameObject
3. Observe the Scene window

Expected result: Particle System is visible
Actual result: Particle System is not visible

Reproducible with: 2020.3.45f1, 2021.3.19f1, 2022.2.8f1, 2023.1.0b6, 2023.2.0a4

Reproduced on: macOS 13.2.1 (Intel)

Note: If selecting the “TrailTest” GameObject, then the Particle System is visible

  1. Resolution Note:

    This happens because the Parent GameObject is not part of the particle "Effect".

    The Effect is defined as being all GameObjects that contain a ParticleSystem Component.

    This means that you can get the preview working in a few ways:
    1. As you say, select TrailTest instead
    2. Select TrailTest, and, in the Scene View preview options that appear, change Simulate Layers to a layer that includes the particle effect. Now it will always be visible in the scene view
    3. Add a ParticleSystem component to Orbiter, and turn off all its modules (Shape, Renderer)

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