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Fixed in Unity 2018.1



Found in


Issue ID




Particles are emitted when the object is not moving even though the particles system is set to emit with Rate Over Distance




Priority: 2Necessary for shipping a final release


Severity: 3Workaround is possible

The issue happens only when the rigidbody has Freeze Rotation on the Z axis set to true and the parent object of Particle System object is moved. If the Particle System itself is moved, everything works as expected.

To reproduce:

1. Open the project, attached by the user (New Unity
2. Open the "Scene1" scene
3. Enter Play mode
4. Move the cube with A and D, and then stop
5. Observe how particles are still being emitted

Expected: the Particle System doesn't emit when the object is not moving

Reproduced in 2017.2.0b1, 2017.2.0f3, 2017.3.0b6, 2018.1.0a1
Did not reproduce in 5.6.4p1, 2017.1.2p2, 2017.2.0a4
Regression introduced in 2017.2.0b1

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