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Fixed in 2021.1.X

Fixed in 2020.1.X, 2020.2.X



Found in






Issue ID




Particle Bounds are displayed incorrectly until a change is made in the Particle System when the particles are generated by code

Visual Effects - Legacy


How to reproduce:
1. Open the attached '' project
2. Enter Play mode
3. In the Hierarchy window select 'Particle System'
4. In the Scene window select 'Show Bounds'
5. Observe the bounds

Expected result: bounds match the particles (cube)
Actual result: bounds do no match the particles (distorted square)

Reproducible with: 2018.4.27f1, 2019.4.9f1, 2020.1.4f1, 2020.2.0b2

Note: making any single change in the Particle System game object (manually or by code) will reset the bounds to the right size/shape

  1. Resolution Note (fix version 2021.1):

    This was caused by a bug in Play that resets that systems procedural mode state causing the bounds to be incorrectly calculated. A workaround for this is to not call Play after calling SetParticles. Call Play first and then SetParticles.

    Fixed in 2021.1.0a1

  2. Resolution Note (fix version 2020.2):

    Fixed in 2020.2.0b7

  3. Resolution Note (fix version 2020.1):

    Fixed in 2020.1.11f1

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