Bug Can't reorder components on prefab variant.

Hi there,

For some reason I can't reorder added components (indicated by the "+" icon) on prefab variants.

In the following random example, I'm trying to move the

AudioSource 

component above the

MeshRenderer 

component. The only component on the base prefab is

RandomComponent

.


What's also strange is that I can use the context menu to move components up and down, but after reloading the inspector, it just resets back to what it was.

 

Any update on this? Looking for a fix on 2019.4 LTS

 

Thanks for the update!

 

Any news on this? It's driving me mad (2021.3.1).

 

For anyone else who finds this thread. Here's a way to trick the Inspector into doing what I wanted to, but it doesn't fix the bug (drag-drop resorting, aka a core feature of the editor, stays broken):

Code (CSharp):

1. using UnityEngine;
2. #if UNITY_EDITOR
3. using UnityEditor;
4. #endif
5.  
6. namespace com.noblerobot {
7.  
8.     public class ComponentSorter : MonoBehaviour {
9.         public Component component;
10.  
11.         public bool moveUp = false;
12.         public bool moveDown = false;
13.  
14.         #if UNITY_EDITOR
15.         private void OnValidate(){
16.             if (moveUp){
17.                 moveUp = false;
18.                 UnityEditorInternal.ComponentUtility.MoveComponentUp(component);
19.             }
20.             if (moveDown){
21.                 moveDown = false;
22.                 UnityEditorInternal.ComponentUtility.MoveComponentDown(component);
23.             }
24.         }
25.         #endif
26.     }
27.  
28. }

Add this component to a GameObject, drag in a component, then click the checkboxes to sort up and down. I didn't use an editor script/custom drawer for this because I wanted to keep it as lightweight as possible.

You'll also get the "Send Message can't be used with OnValiate" warning when using it, but this is a hack anyway so I don't care.

Remove this component when you're done, but it doesn't cause any harm if you forget to. I suppose it could be turned into an Editor window instead of its own component to make it less tedius, but again, hack.

For prefab variants with this issue, I assumed there are some corrupted values in the *.asset file (before making this fix, I tried copying/removing/pasting the components in the correct order, they went back to the wrong order again after saving the asset). Since this script doesn't fix the broken state while it can permanently change the order, I don't know [shurg Emoji].

 

Welp, Nevermind. This doesn't work either. The components get sorted back into the "wrong order" after a few minutes of moving around the project.

What the hell is going on here?

 

I can, but as is often the case with these things, I can't attach a project (because it's 10GB and contains things I shouldn't share), so I don't know what good it will do, sadly...

I've recently updated from 2020 LTS to 2021 LTS, so I didn't realize this effected all the prefab varients in my project at first. I then assumed it was intended (if illogical) behavior in 2021 LTS, but now it seems like it is actually a bug.

Is there anything other than a project-less bug report I can provide that might be helpful? Or, which assets/config files within a project would you guess might be most effective to submit with a bug report?

Thanks!

 

Yes, we all know what makes things wonderful and easier for Unity.

It's just not practical.

With a bug like this, figuring out "everything that is not relevant for the bug" can mean a week-long research project for the end-user.

I was just hoping you might have some hints/guesses to make it a bit easier for me.

Eh, so it goes. It's not a easy square to circle on your end, I get it.

 

Hey so, on 2021.3.4f1
I can't reorder components on a prefab variant, even if that specific component isn't present on the father, but I should be able to? Just trying to confirm this is the bug and I'm not just missng something

 

It's a bug.

Why the fix isn't being backported to 2021 is beyond me. Yes, a bug in an essential part of Unity (inspector)... let's not fix it for the LTS version. Anyway it's on par with the average quality of Unity team's decision making, I suppose.

 

Ugh, just ran into this. It's really annoying. Shame the LTS can't get any love.
You can copy and paste the components around I guess.

Edit - Right Click "Move Up" and "Move Down" works for me. That's okay, you need to have sniper level accuracy to dag and drop anyway

 

If you have a monolithic huge component it's okay. If you have a lot of components (like the name "component" implies) it takes forever to reorganize it.