Type mismatch when copying asset with subassets

[small schooner]

I have this SO with a gradient field that generates a Texture2D that I add into the AssetDatabase as a subAsset of the SO. Problem is that only sometimes will some these assets have a "Type mismatch" in the texture field for some odd reason. When I try to log the texture field to check its type, they're always the same Texture2D but sometimes I see logs coming from a "worker0", "worker1", etc. instead of the usual name of the SO, which I suspect is when those type mismatch happen.

Any idea what could going on?

[gentle path]

can you show the code for how you're generating and saving it? The Type Mismatch feels to me like the object was destroyed

[small schooner]

sure thing, here you go

public class ColorPalette : ScriptableObject
{
    public Gradient m_gradient = DefaultGradient();

    [SerializeField, Range(2, 256)]
    private int m_resolution = 256;

    [SerializeField, ReadOnly]
    private Texture2D m_gradientTexture;

    public Texture2D GradienTexture => m_gradientTexture;

    public static Gradient DefaultGradient()
    {
        // ...
    }

    private void OnEnable()
    {
        if (m_gradientTexture == null)
        {
            UpdateGradientTexture();
            AssetDatabase.AddObjectToAsset(m_gradientTexture, this);
        }
    }

    private void OnValidate()
    {
        if (m_gradientTexture != null)
            m_gradientTexture.name = name;

        UpdateGradientTexture();
    }

    private void UpdateGradientTexture()
    {
        var subAssets = AssetDatabase.LoadAllAssetsAtPath(AssetDatabase.GetAssetPath(this));

        if (subAssets != null && subAssets[0] != m_gradientTexture)
        {
            m_gradientTexture = subAssets[0] as Texture2D;
        }

        if (m_gradientTexture == null || !AssetDatabase.IsSubAsset(m_gradientTexture))
        {
            m_gradientTexture = new Texture2D(m_resolution, 1, TextureFormat.RGBA32, false)
            {
                name = name,
                wrapMode = TextureWrapMode.Clamp,
                filterMode = FilterMode.Point,
            };
        }

        for (int x = 0; x < m_resolution; x++)
            m_gradientTexture.SetPixel(x, 0, m_gradient.Evaluate((float)x / (m_resolution - 1)));
        m_gradientTexture.Apply();
    }
}

[gentle path]

Have you debugged this?
It looks like it's never:

1. Saving the asset
2. adding the texture to the asset if it's not there already

[small schooner]

oh, forgot I left that part about checking the subassets... that was a quick fix after I renamed the gradient field and was getting mismatch then

hard to debug because I can't consistantly reproduce it, seems to happen randomly

[gentle path]

Oh wait now I see the AssetDatabase.AddObjectToAsset(m_gradientTexture, this); call - but that seems like it shouldn't be running on every OnEnable right?

[gentle path]

And yeah I don't see you saving the asset anywhere

[small schooner]

it only runs once as far as I know, if it ran multiple times it would be giving out errors like I've had happen before

[gentle path]

runs once when

every time you load the project probably/possibly

[small schooner]

when the file gets imported/saved to disk, I'd assume

hmm haven't tried reloading yet

[gentle path]

Let's not make assumptions 😉

Debug.Log!

[small schooner]

either way, the texture should be serialized, no?

so it wouldn't run again as long as it has a non-null texture

[gentle path]

sure but if it doesn't save and then there's a domain reload, it will go away

[small schooner]

hmm, OnEnable is called twice immediately after the file is saved to disk

reloading the project runs once on each ColorPalette asset and texture isn't null

can't have it mismatch anymore even though the only code change are debug logs... I swear this thing knows it's getting observed

finally removed the debug call and they all turned into type mismatch after the domain reload

copying an asset with a type mismatch logs there's already a texture in that copy, with the texture already assigned to the new name 🤔 and it's called 3 times

[small schooner]

hmm... well here's something interesting:
if I create an asset, save to disk and rename it, the subasset is also renamed, but the texture field continues showing the old asset name until the next domain reload