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Fixed in 2019.2.X
Fixed in 2018.3.X, 2019.1.X
Votes
0
Found in
2018.3.0a6
2018.3.3f1
2019.1.0a1
2019.2.0a1
Issue ID
1123424
Regression
No
Prefab disappears from Prefab Mode when Setting Prefab parent with GameObject.Find
Reproduction Steps:
1. Open "SampleScene" in attached "TestBug.zip" project
2. Enter Prefab Mode by double-clicking on the "TestPrefab" in prefabs folder
3. Drag the "TestSetParent" script onto the prefab
4. Observe The Prefab Mode and Console
Expected Behavior: Script tries to look for the desired GameObject in Prefab Mode and if found sets it as a parent
Actual Behavior: Script finds the desired GameObject in the Scene and sets it as a parent, Prefab disappears from Prefab Mode
Reproducible with: 2018.3.5f1, 2019.1.0b2, 2019.2.0a4
Note: Could not test on 2017.4 stream as there is no Prefab Mode
-------------------------------------------------------------------------------------
Fixed in 2019.2.0a8
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Resolution Note (fix version 2019.2):
From 2018.3 using ExecuteInEditMode and ExecuteAlways logic needs to handle the special care:
In this case you need to check what Stage the GameObject is in before reparenting. Make sure that the GameObject is in the Main Stage (and not a Prefab Stage) before reparenting. E.g:
using UnityEngine;
#if UNITY_EDITOR
using UnityEditor.SceneManagement;
#endif
[ExecuteInEditMode]
public class TestSetParent : MonoBehaviour
{
private void OnEnable()
{
#if UNITY_EDITOR
if (StageUtility.GetStageHandle(gameObject) == StageUtility.GetMainStageHandle())
#endif
transform.parent = GameObject.Find("TestContainer").transform;
}
}
We have also added better error handling when the root GameObject in Prefab Mode is incorrectly been moved to another Stage (e.g the main scenes).