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Fixed in 2020.2.X

Fixed in 2019.4.X, 2020.1.X

Votes

0

Found in

2019.3.0a7

2019.4.7f1

2020.1

2020.2

Issue ID

1269545

Regression

No

Particle System mesh UV coordinates change when mesh's geometry layout is changed on import

Visual Effects - Legacy

-

How to reproduce:
1. Open user-submitted project (Geom_Layout_Particles.zip)
2. Open the Main scene
3. Enter Play Mode
4. Select the 'Particles' GameObject
5. In the Inspector window click 'Import with UV16' button on 'Reimport' script and wait a few seconds

Expected result: UV coordinates remain the same for static cube mesh and particle system meshes
Actual result: UV coordinates remain the same for static cube mesh, but not for the particle system meshes

Reproducible with: 2019.3.0a7, 2019.4.8f1, 2020.1.2f1, 2020.2.0a20
Could not test with: 2018.4.26f1, 2019.3.0a6(VertexAttributeDescriptor not implemented)

Note:
With earlier versions of Unity, the static cube mesh does not have the correct material, but the particle system meshes do and still change UV coordinates after reimporting

  1. Resolution Note (fix version 2020.2):

    Fixed in 2020.2.0b1

  2. Resolution Note (fix version 2020.1):

    Fixed in 2020.1.5f1

  3. Resolution Note (fix version 2019.4):

    Fixed in 2019.4.10f1

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