Container expands each frame if text input has space after it

[IS2511]

Describe the bug

Assuming horizontal layout, adding space (ex: ui.add_space(10.0)) after a TextEdit::singleline makes the container (ex: window) expand to the right each frame until it reaches desired_width of the TextEdit.

To Reproduce

Steps to reproduce the behavior:

1. New project with eframe on linux, default backend.
2. Paste the example code (below) in the egui update function.
3. Run the app.
4. (Optional) Change desired_width to f32:INFINITY to make the container expand infinitely.

Shrinking the window by hand after it grew can make it temporary smaller, but it will grow back again once released.

egui::Window::new("Sample text").show(ctx, |ui| {
    ui.horizontal(|ui| {
        let mut text = String::new();
        egui::TextEdit::singleline(&mut text)
            .desired_width(400.0)
            // .desired_width(f32::INFINITY)
            .show(ui);
        ui.add_space(10.0);
    });
});

Expected behavior

Adding space after a text input makes the window size accommodate that extra space and not grow each frame until it fits.

Having an infinite desired_width should not grow the container. From documentation:

pub fn desired_width(self, desired_width: f32) -> Self

Set to 0.0 to keep as small as possible. Set to f32::INFINITY to take up all available space (i.e. disable automatic word wrap).

Screen captures

With desired_width(400.0):

vokoscreenNG-2022-11-11_15-57-57_short.mp4

With .desired_width(f32::INFINITY):

vokoscreenNG-2022-11-11_16-01-58_short.mp4

Desktop

• OS: ParrotOS Linux 5.18.0-14parrot1-amd64 Debian 5.18.14-1parrot1 (2022-08-07) x86_64 GNU/Linux
• Version: eframe 8ff1396

Extra

Manually added space after the text input should not be considered available space. Or is that intended behavior?