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Fixed in 2020.1.X

Fixed in 2019.3.X



Found in




Issue ID




Crash on ParticleSystem::EndUpdateAll() when exiting Play mode while a Particle System is simulating

Visual Effects - Legacy


How to reproduce:
1. Open the attached project ''
2. Open 'Main Menu (Console)' scene
3. Enter Play mode
4. Exit it
-- observe the crash

Reproducible with: 2019.3.0b8, 2019.3.0f5, 2020.1.0a9, 2020.1.0a18
Not reproducible with: 2018.4, 2019.2, 2019.3.0b7, 2020.1.0a8

First few lines of the stack trace:
#0 0x005566b764287e in ParticleSystem::EndUpdateAll()
#1 0x005566b764314d in ParticleSystem::InitializeClass()::PostLateUpdateParticleSystemEndUpdateAllRegistrator::Forward()
#2 0x005566ba0133fe in ExecutePlayerLoop(NativePlayerLoopSystem*)
#3 0x005566ba01346a in ExecutePlayerLoop(NativePlayerLoopSystem*)

- In the UIParticleRenderer.cs script the Start() method starts simulating a Particle System for 10 seconds, to reproduce the crash you have to exit Play mode in that period

  1. karl_jones

    Jan 04, 2020

    The issue is caused when a system has a stop action and gets destroyed while it is culled.
    We have a fix which will be available soon.

Comments (14)

  1. karl_jones

    Mar 20, 2020 18:46

    Could you please file a bug report if you are still suffering from a crash.

  2. GainfulSage

    Mar 20, 2020 02:02

    Just got this crash on 2019.3.6f.

  3. luvjungle

    Mar 17, 2020 08:22

    Still happening in 2019.3.5
    Or this bug

    Either way, 2019.3 build of my game is completely broken, need to rollback, i guess

  4. daniel-hall

    Mar 13, 2020 12:20

    I'm still getting this on 2019.3.5f1.

  5. Safemilk

    Mar 09, 2020 00:09

    Just confirmed this in 2019.3.4f1 using HDRP.

  6. luvjungle

    Mar 05, 2020 19:59

    2019.3.3 crashing without exiting editor.
    Crashing on adroid build too

  7. felixmann

    Mar 04, 2020 01:01

    Getting this issue on 2019.3.3f1 while playing a scene. Do not have to stop the scene to hit the crash.

  8. matheustaveiros

    Mar 04, 2020 00:09

    Same here, Unity 2019.3.3f1 still crashing on Editor and android build.

  9. wilczarz_84

    Feb 18, 2020 11:40

    One more thing. This issue does not require to exit playmode. It just happens during the gameplay

  10. wilczarz_84

    Feb 18, 2020 11:36

    Same here, the Unity is crashing all the time because of the particle system. Practically all versions above 2019.3.0f1 is affected. The newest one 2019.3.1f1 does NOT fix this!

    @ MRDIZZLE26 I also have my pooling system. I suspect the crash is happening when I call
    particle.Stop(true, ParticleSystemStopBehavior.StopEmittingAndClear);

    However I am not sure which particle causes this. My stop behaviour is probably Callback.

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