Control nodes inside a subviewport do not observe anchoring behavior

[croxis]

Godot version

4.0.1

System information

Arch linux

Issue description

Nodes created for a subviewport do not observe anchors layout mode.

Steps to reproduce

Create a control node scene. Throw in some colored rectangles with different anchor points. Create one colored rectangle with a position layout mode. Only the position layout mode will be rendered in the correct position.

becomes

Minimal reproduction project

Containertest.zip

[Calinou]

The subviewport has a different size (512×512 by default). If your root viewport or default window size in the editor is different from the subviewport's size, it's expected that anchors will put UI elements in diffrent positions compared to the root Viewport.

@croxis Please upload a minimal reproduction project to make this easier to troubleshoot.

[croxis]

Attached