Ctrl is reported as not pressed when combining Ctrl+Altgr on Windows

On Windows, when pressing a key in combination with altgr for example ctrl+alt-gr+e, which produces €, the CTRL state is not reported correctly. Here's the log from WindowEvent::KeyboardEvent, and WindowEvent::ModifiersChanged

Modifiers { state: ModifiersState(CONTROL), pressed_mods: ModifiersKeys(0x0) }
KeyEvent {
    physical_key: ControlLeft,
    logical_key: Control,
    text: None,
    location: Left,
    state: Pressed,
    repeat: false,
    platform_specific: KeyEventExtra {
        text_with_all_modifers: None,
        key_without_modifiers: Control,
    },
}
Modifiers { state: ModifiersState(0x0), pressed_mods: ModifiersKeys(0x0) }
KeyEvent {
    physical_key: AltRight,
    logical_key: AltGraph,
    text: None,
    location: Right,
    state: Pressed,
    repeat: false,
    platform_specific: KeyEventExtra {
        text_with_all_modifers: None,
        key_without_modifiers: AltGraph,
    },
}
KeyEvent {
    physical_key: AltRight,
    logical_key: AltGraph,
    text: None,
    location: Right,
    state: Pressed,
    repeat: true,
    platform_specific: KeyEventExtra {
        text_with_all_modifers: None,
        key_without_modifiers: AltGraph,
    },
}
KeyEvent {
    physical_key: AltRight,
    logical_key: AltGraph,
    text: None,
    location: Right,
    state: Pressed,
    repeat: true,
    platform_specific: KeyEventExtra {
        text_with_all_modifers: None,
        key_without_modifiers: AltGraph,
    },
}
KeyEvent {
    physical_key: AltRight,
    logical_key: AltGraph,
    text: None,
    location: Right,
    state: Pressed,
    repeat: true,
    platform_specific: KeyEventExtra {
        text_with_all_modifers: None,
        key_without_modifiers: AltGraph,
    },
}
KeyEvent {
    physical_key: AltRight,
    logical_key: AltGraph,
    text: None,
    location: Right,
    state: Pressed,
    repeat: true,
    platform_specific: KeyEventExtra {
        text_with_all_modifers: None,
        key_without_modifiers: AltGraph,
    },
}
KeyEvent {
    physical_key: KeyE,
    logical_key: Character(
        "€",
    ),
    text: Some(
        "€",
    ),
    location: Standard,
    state: Pressed,
    repeat: false,
    platform_specific: KeyEventExtra {
        text_with_all_modifers: Some(
            "€",
        ),
        key_without_modifiers: Character(
            "e",
        ),
    },
}
KeyEvent {
    physical_key: KeyE,
    logical_key: Character(
        "€",
    ),
    text: None,
    location: Standard,
    state: Released,
    repeat: false,
    platform_specific: KeyEventExtra {
        text_with_all_modifers: None,
        key_without_modifiers: Character(
            "e",
        ),
    },
}
Modifiers { state: ModifiersState(CONTROL), pressed_mods: ModifiersKeys(0x0) }
KeyEvent {
    physical_key: AltRight,
    logical_key: AltGraph,
    text: None,
    location: Right,
    state: Released,
    repeat: false,
    platform_specific: KeyEventExtra {
        text_with_all_modifers: None,
        key_without_modifiers: AltGraph,
    },
}
Modifiers { state: ModifiersState(0x0), pressed_mods: ModifiersKeys(0x0) }
KeyEvent {
    physical_key: ControlLeft,
    logical_key: Control,
    text: None,
    location: Left,
    state: Released,
    repeat: false,
    platform_specific: KeyEventExtra {
        text_with_all_modifers: None,
        key_without_modifiers: Control,
    },
}

As soon as AltGraph is pressed Modifiers::state stops reporting Control, and only starts reporting it again when AltGr is released. Therefore, it's impossible to determine that control is held down using the modifiers state alone.

Note that there's also another, not as critical bug shown in the logs, AltGraph is repeated, although I don't think there should be a key repeat on that since it's a modifier, I'm not even sure if it makes sense to report it as a key press at all, rather than a modifier state.

This was reproduced using Neovide and Winit 0.29.0-beta.0

I think a similar issue was reported by @dhardy here in this comment https://github.com/rust-windowing/winit/issues/2898#issuecomment-1662679926

Reproduce the Ctrl+AltGr sequence on Windows and inspect the logged WindowEvent::KeyboardEvent and ModifiersChanged output. Compare the behavior with the related discussion in issue #2898; done means Control remains represented in modifier state while AltGraph is held and AltGraph does not produce inappropriate repeats.