Bug LoadFromStreamAsync seems to keep running after stopping Player in Editor

I'm loading the asset bundle in a coroutine from a ZipStream, which I copy to a MemoryStream. Then I use LoadFromStreamAsync to load the asset bundle. See:

Code (CSharp):

1. using (MemoryStream memoryStream = new MemoryStream())
2. {
3.     zipStream.CopyTo(memoryStream);
4.     request = AssetBundle.LoadFromStreamAsync(memoryStream);
5.     while (!request.isDone) { yield return null; }
6. }
7.  
8. AssetBundle result = request.assetBundle;

I want to keep the AssetBundle loaded in memory (i.e. store it in an AssetBundle variable somewhere), but the MemoryStream gets disposed after the request is done.

Now I see this piece in the documentation:

> Do not dispose the Stream object while loading the AssetBundle or any assets from the bundle. Its lifetime should be longer than the AssetBundle. This means you dispose the Stream object after calling AssetBundle.Unload.​

Taken from https://docs.unity3d.com/ScriptReference/AssetBundle.LoadFromStreamAsync.html

Why is that? Am I doing something that shouldn't be done / done in a different way? Should I just keep the MemoryStream around? That doesn't feel right.

I'm asking because when stopping this coroutine in OnApplicationQuit, it still loads the AssetBundle in memory and gives the following error when running the coroutine again on the next time pressing Play in the Editor:

> The AssetBundle 'IO.Stream' can't be loaded because another AssetBundle with the same files is already loaded.

​

Thanks in advance for any advice Normally I just read source code / existing questions, but this I couldn't find that much on.

 

Seems like could be related to https://forum.unity.com/threads/edi...operly-if-interrupted-during-loading.1426350/

 

If the AssetBundle.LoadFromStreamAsync operation has completed in between stopping and pressing Play again, AssetBundle.UnloadAllAssetBundles does work to clean up the loaded AssetBundle.

However, if the AssetBundle.LoadFromStreamAsync operation is still running after pressing Play, the error [0] will persist.

[0] The AssetBundle 'IO.Stream' can't be loaded because another AssetBundle with the same files is already loaded.