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Fixed in 5.4.0



Found in


Issue ID




TLS Allocator errors followed by an Editor crash when instantiating a lot of objects with Particle Systems



Steps to reproduce:

1. Open attached project (
2. Open and play 'BugTest' scene
3. Click and hold left mouse button - particle effects will start instantiating
4. After a few seconds, the following error is spammed in console:
> TLS Allocator ALLOC_TEMP_THREAD, underlying allocator ALLOC_TEMP_THREAD has unfreed allocations
5. Continue to hold the mouse button down for a while - editor will crash

Not reproducible with: 5.3.5f1, 5.4.0b21

Comments (1)

  1. DaveRoberts

    Jun 24, 2016 16:24

    This is hitting my project as well. It blocks us immediatley

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