GetAssetPreview not working as intended (stack multiple assets in one)

Hi there,

I’m having trouble generating assets preview in PNG format with Unity 5.6.1p1 . I wrote this script who’s working well and generates png images for my assets and saves them on my file system.
The only thing that bother me is the image generated :

95224-arch02.png

It seems like multiple assets from my game are being rendered, so I wonder if there is not a stream behind not being properly flushed or something like this…

Here’s the script behind :

    void Start ()
    {
        var pPath = Application.dataPath + "/../Previews/";
	    var folders = ResourcesLoader.GetAllFoldersInEditorObject();
	    Directory.CreateDirectory(pPath);

        foreach (var f in folders)
        {
            var cPath = pPath + f + "/";
            Directory.CreateDirectory(cPath);
            var objs = Resources.LoadAll<GameObject>("EditorObject/" + f);         
	        foreach (var o in objs)
	        {
	            Texture2D t = null;
	            var counter = 0;
	            while (t == null && counter < 15)
	            {
	                t = AssetPreview.GetAssetPreview(o);
	                counter++;
	                Thread.Sleep(15);
	            }
	            Debug.Log("Get preview : " + o.name);

                try
                {
                    var bytes = t.EncodeToPNG();
	                using (var fs = new FileStream(cPath + o.name + ".png", FileMode.Create, FileAccess.Write))
	                {
	                    fs.Write(bytes, 0, bytes.Length);
	                }
	            }
	            catch (Exception ex)
	            {
	                Debug.LogError("Cannot create file " + cPath + o.name + ".png");
	            }

	        }
            break;
        }
	}

(I’ve put a break at the end of the first loop for testing purpose)

Is there anybody experiencing the same ?

@cocapasteque did you ever find a solution? It is happening for me in 2020.3