How to reproduce:
1. Open the attached project "ParticleZeroSurfaceBug.zip"
2. Open the "Bug" Scene
3. Enter the Play mode
Expected result: The particles are scattered across the Scene, released from the sides of the Cube
Actual result: The particles are launched in a straight line at first, afterwards they are released from the sides of the Cube
Reproducible with: 2019.4.37f1, 2020.3.33f1, 2021.2.19f1, 2021.3.0f1, 2022.1.0b15, 2022.2.0a9
Notes:
- Only reproducible if the Particle System's Shape is set to Mesh Renderer
- Setting the Particle System's Type to Edge or Triangle throws this warning: "Particle System is trying to spawn on a mesh with zero surface area"