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Fixed in 5.5.2



Found in


Issue ID




Loading multiple bundles using AssetBundle.LoadAssetAsync freezes editor

Asset Bundles


How to reproduce:
1. Open user's project
2. Enter play mode

There is a low chance that the bundles will be loaded successfully, in that case just reenter play mode and it will reproduce

Expected behaviour: Successful asynchronous asset bundle load
Actual behaviour: Editor has a high chance of freezing/locking up when loading the bundles

Reproduced on: 5.5.0f2, 5.5.0p2, 5.6.0b2
Not reproduced on: 5.4.3p4*, 5.5.0f1
Regression introduced in: 5.5.0f2

* - Crashes when exiting play mode after the second run

Comments (22)

  1. Tyrathect

    Dec 17, 2016 20:50

    We're having something similar. When we try to load certain scenes async, the scene never finishes loading. The game loop comes back (it's calling update, etc) but the loading of the new level fails. I assume something blocks on the loading thread, but I have no way to determine what it is. I'm sort of guessing that this is implemented internally as loading multiple assets async, so I'm thinking there's a deadlock in their code somewhere. This all worked prior to 5.5

  2. Tyrannicus100BC

    Dec 16, 2016 18:34

    This is also a complete blocker for us. We are on 5.3 and really want to upgrade to 5.5, but can't because of this issue.

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