[Bug] Scene references are overwritten when you select multiple objects

[EricPendergast]

I have verified this occurs in Unity Linux versions 2019.3.12f1 and 2020.1.9f1.

The bug is that when you select multiple objects with different scene references, they will all be set to the same scene reference.

Steps to Reproduce

1. Create an empty unity project.
2. Create two game objects in a scene, and put the following script on both of them:

using UnityEngine;

public class SceneReferenceWrapper : MonoBehaviour
{
    [SerializeField]
    private SceneReference reference;
}

3. Create two different scenes.
4. Make the two scripts reference the two different scenes.
5. Select the two objects at the same time, then deselect them.
6. Observe that they now both reference the same scene.

[starikcetin]

That is weird, I will take a look this weekend.

[Tymski]

It's also bugged on Windows.
I'm currently using Unity2020.1.3f1

[Tymski]

Quick workaround: disable multi editing by pasting the following code on top of the OnGUI (public override void OnGUI(Rect position, SerializedProperty property, GUIContent label)) method:

if (property.serializedObject.isEditingMultipleObjects)
{
    GUI.Label(position, "Scene multiediting not supported");
    return;
}