Search Issue Tracker

Won't Fix



Found in


Issue ID




Prefab references of a monobehaviour are not being cleaned up when the monobehaviour is destroyed

Asset Import Pipeline


Steps to reproduce:

1. Play the Test scene
2. Using the Unity Profiler>Memory>Detailed view take a Sample
3. Notice in the Assets>Texture view the test_asset is loaded into memory
4. In the game view press the "Destroy" UI button
5. Press the UnloadUnusedAssets button
6. Using the Unity Profiler>Memory>Detailed view take a Sample

Observe: The test_asset is still loaded into memory


Set reference to null(click the 't.prefab=null' button) before unloading the asset.

  1. Response avatar

    Resolution Note:

    Hi there,

    We really appreciate your contribution to the Unity product. Thank you for reporting this issue. We take every case submitted to us seriously by investigating the impact on you, our customer, as well as the impact it may have on the engineering and experience of our product.

    This particular case has been investigated thoroughly and we have decided, in the interests of protecting the stability and features of Unity for users that rely upon the affected versions, to not address this fix for the time being. We understand that this will cause problems for some users, and so may address in a future version.

    Unity QA Team

Add comment

Log in to post comment

All about bugs

View bugs we have successfully reproduced, and vote for the bugs you want to see fixed most urgently.