I have a packed scene whose layout is like so:

Control
- Label
- Label
- MenuButton
- RichTextLabel
- SubViewportContainer
- - SubViewport
- - - MeshInstance3D
- - - MeshInstance3D
- - - Camera3D

I instantiate instances of the scene, fill out the necessary details (text for labels, mesh for mesh instances, etc), then add them as children to a VBoxContainer who is the child of a ScrollContainer, but they are only offset by a few pixels, not the 100 pixels the Control node’s size.y is set to. I tested it by manually adding instances of the Packed Scene and the same issue occurs. Why is this? How do I fix it?