Controls in viewport with stretch-shrink positioned wrong

[rakkarage]

Godot version

v4.0.alpha2.official [79077e6]

System information

Windows 10

Issue description

After creating a SubViewportContainer and a SubViewport and setting stretch-scale to 2 and adding a child control and centering it looks like it is in the wrong position in editor but right when running. This works in 3. Thanks.

Steps to reproduce

• open TestGenerate .tscn, or generate a scene like gif, notice part off screen
• run and fine

Minimal reproduction project

https://github.com/rakkarage/GenerateTexture

[Rindbee]

I feel like this is a situation where we want the SubViewport to work like a Control. Unfortunately it isn't, so the passing of update calls between parent and child is broken. So maybe there are nodes that are not updated.

[Sauermann]

I had a look at the MRP and it doesn't contain any SubViewport-node. So it doesn't fit to the bug-description.

[KoBeWi]

Seems still valid, here's some repro
Repro.zip
The only problem here is that it looks different in game than in editor.