Assets referenced by polymorphism [SerializeReference] not found

[Staarter]

Description of the bug

Assets that are referenced by polymorphism using the tag [SerializeReference] are not found by AUD.

Reproduction steps

• Create scripts using these class :

using System.Collections.Generic;
using UnityEngine;

[System.Serializable]
public class ContainerBase { }

[System.Serializable]
public class ContainerGO : ContainerBase
{
	public GameObject go;
}

[CreateAssetMenu(fileName ="AUD_SerializeReference", menuName = "AUD_SerializeReference")]
public class DebugAUD_SerializeReference : ScriptableObject
{
	[SerializeReference] public List<ContainerBase> test = new List<ContainerBase>();

	private void OnValidate()
	{
		// Add an empty element here: we cannot do it in inspector by default
		test.Add(new ContainerGO());
	}
}

[CreateAssetMenu(fileName ="AUD_Default", menuName = "AUD_Default")]
public class DebugAUD_Default : ScriptableObject
{
	public List<ContainerGO> test = new List<ContainerGO>();
}

• Create the two ScriptableObject 'AUD_Default' & 'AUD_SerializeReference'.
• Add a prefab gameObject into theses two 'test' fields.
• Try to search this prefab using the AUD window
• Only the ScriptableObject 'AUD_Default' will be found as using the prefab.

Platform specs

Please provide the following info if this is a Unity 3D repository.

• Unity version: 2020.3.16
• Platform: Windows
• How did you download the plugin: Asset Store (the asset is up to date)

Additional info

I know that Unity have made changes about SerializeField in 2021 or 2022, the serialization can be changed, but I am using 2020..

[yasirkula]

Thank you for bringing this to my attention! I'll include the fix in the next release but in the meantime, you can apply the fix yourself by changing these lines:

UnityAssetUsageDetector/Plugins/AssetUsageDetector/Editor/AssetUsageDetectorSearchFunctions.cs

Lines 1421 to 1425 in 8072530

	case SerializedPropertyType.ManagedReference:
	propertyValue = GetRawSerializedPropertyValue( iterator ) as Object;
	searchResult = SearchObject( PreferablyGameObject( propertyValue ) );
	enterChildren = false;
	break;

As follows:

case SerializedPropertyType.ManagedReference:
	object managedReferenceValue = GetRawSerializedPropertyValue( iterator );
	propertyValue = managedReferenceValue as Object;
	searchResult = SearchObject( PreferablyGameObject( managedReferenceValue ) );
	enterChildren = false;
	break;

[Staarter]

Thank you for your reply!
This fix works like a charm, good job.