Order of components in prefab varients changes randomly.

Hi I am using Unity 2019.3.0f3 and I have encountered a weird bug regarding prefabs and component order.
I've witnessed this bug on a few of the recent builds (even on 2019.2)
Sometimes Unity will not allow me to reorder components, I enter prefab mode, reorder them and they get reverted.
Even If I remove all components and add them one by one, saving each component, they would jumble again when going out of prefab mode.

Note that this behaviour only happens in prefab variants, however all the components were added in that variant for example: I have a blender model that I use and add components to, I make a variant of that model(so changes in blender still apply) and in that prefab variant all components are marked with a "+" annotating that these are added components, yet I still can't reorder these and even if I delete these and Re-Add them they still take a random order and not the order I added them by.

Thank you, I hope you fix it soon

 

I'm getting this same bug, I can't find a solution,

 

I'm experiencing the same. But it affects the order how the items are rendered on the screen, why do you say it's only cosmetic?

 

Doesn't it also change the order of execution per object?
I use the order of execution settings but as far as I remember the inspector order is also taken into consideration.

 

I have to mention that it is not a costemic issue.
To us, it breaks our working process and best practices.
When you're scrolling to find out where is the main component of your gameobject that it's lost somewhere in the middle of various secondary components, you gradually lose time each time.
And when your process is based on components reusability and prefabs, you lose a lot of time.

It is not a minor bug.

 

It's not just cosmetic.
When you have a complex system with a lot of prefabs you want to be able to reliably set up a components order for visual reasons; it saves a lot of time to find the values you need when you need to change them.
I'm aware of the nested/variant prefab workflow, but a lot of times you still end up with a lot of prefabs that share a similar components setup, and you wont the components order to be consistent.
And please, don't dismiss user feedback like they don't know what they're talking about; a lot of us use Unity for work, not just for free time fun

 

I got this bug in 2020.3.19f1

It is so annoying...

Makes me not want to work with prefab variants if I have to give up control to some random ordering system.

 

Yes, and Unity doesn't care to fix it.

 

Bump for quality of life

 

Component order does effect the order of which OnDisable/OnEnable methods are called for components on a GameObject.

Also when you have multiple components that inherit from the same base class, and call GetComponent<BaseClass>() it will get the first one; which is certainly convenient for some coding design decisions.

I can think of more applications off the top of my head, like: wanting to use the order of a GetComponents in an editor script to auto-populate a serialized array before runtime to avoid dragging and dropping these components.

The point is, this not a cosmetic issue.

These are real issues I have experienced based on certain solutions implemented before prefab variants were introduced; which now require more complex, and less optimal work-arounds in order to use prefab variants. In some cases it is less of a headache to just unpack the prefab and manually maintain each one instead of using a variant.

 

When you have UI it matters a lot, especially if you use layout groups.

 

relatively low issue? that's why you guys still haven't fixed it yet. it's really annoying.