Label with custom font gets misaligned after resizing with 2d scretch mode

[manokara]

Godot version:
3.2.3 Stable Official

OS & Hardware:
Solus/Linux 5.6.19
Ryzen 5 2400G (+RX Vega 11 iGPU)
GLES2 renderer

Issue description:
Resizing the window shifts the label (which is anchored to the center) slightly to the right, making it not align with the Node2Ds behind it. This does not happen with the default font, and I have not tested if this also happens with a BitmapFont. My repro project below uses a DynamicFont.

• Demonstration 1: https://streamable.com/1da7gk
• Demonstration 2 (more perceptible): https://streamable.com/9j7qjl

Steps to reproduce:

1. Add one or more Node2Ds to the scene
2. Add a root Control node that covers the entire viewport and a Label as a child anchored to Center
3. Set viewport stretch mode to 2d
4. Run the scene: Resize the window so it becomes small enough, then resize it back to the original size or larger. The Node2Ds will not align with the label.

Minimal reproduction project:
https://mega.nz/file/fVdxEIYC#1XaMSVvjFN7YKNG8JLP5F38ooe1WtpLa7ffi5jjBbi4

[Calinou]

As a workaround, try disabling Rendering > Quality > Dynamic Fonts > Use Oversampling in the Project Settings.

You can also enforce a minimum window size to prevent the window from being resized to a very small size, which tends to cause this kind of issue. To do so, call OS.min_window_size = Vector2(<width>, <height>) in any script's _ready() method. This will be done by default if #37260 is merged.

[Calinou]

Duplicate of #37242 (same cause).