Bevy ignores explicit canvas size on web/webgpu platform

[rectalogic]

Bevy version

0.16.1

What you did

I specify a specific width/height on an HTML canvas
<canvas id="bevy-canvas" width="640" height="360"></canvas>,
I set the canvas id on my primary window:

app.add_plugins((DefaultPlugins.set(WindowPlugin {
    primary_window: Some(Window {
        canvas: Some("#bevy-canvas".into()),
        ..default()
    }),
    ..default()
})

What went wrong

Bevy resized my canvas to 1280x720:

Additional information

Repository reproducing the issue https://github.com/rectalogic/bevy_canvas_size

[mockersf]

This is pretty much by design. Bevy will try to set its window to the size you specify in code. The default size is 1280x720.

The workaround we have for web in Bevy is to set Window::fit_canvas_to_parent to true