Window decorations still rendered when fullscreen set to true

[barries]

Describe the bug
eframe renders window decorations when in fullscreen is true.

Workaround: set decorations = !fullscreen.

To Reproduce
Steps to reproduce the behavior:

1. Install eframe_template
2. Implement F11 to set fullscreen to true (see code below)
3. Run app
4. Press F11
5. Observe window decorations rendered where the normal-sized window used to be.

Expected behavior
Window decorations do not render.

Screenshots

Desktop (please complete the following information):

• OS: WSL2 in Windows 11
• Browser: N/A
• Version: N/A

Smartphone (please complete the following information):

• Device: N/A
• OS: N/A
• Browser: N/A
• Version: N/A

Additional context

Fullscreen implementation:

if let Some(new_fullscreen) = ctx.input(|i| {
    if i.key_pressed(Key::F11) { Some(!i.viewport().fullscreen.unwrap_or(false)) }
    else                       { None                                            }
}) {
    ctx.send_viewport_cmd(egui::ViewportCommand::Fullscreen(  new_fullscreen));
}

[barries]

Minor update: the workaround is not needed when building & running on Windows 11.