Pointer<Drag> event delta depends on scale factor

[arcln]

Bevy version

0.16

What you did

I tried to implement a draggable window using bevy UI and the Pointer event.

(
    Window,
    Node {
        position_type: PositionType::Absolute,
        left: Val::Px(100.0),
        top: Val::Px(100.0),
        width: Val::Px(600.0),
        height: Val::Px(300.0),
        ..Default::default()
    },
    children![
        // ...
    ],
    observers![|mut trigger: Trigger<Pointer<Drag>>,
                mut windows: Query<&mut Node, With<Window>>| {
        let Ok(mut window_node) = windows.get_mut(trigger.target()) else {
            return;
        };

        let Val::Px(left) = window_node.left else {
            return;
        };
        let Val::Px(top) = window_node.top else {
            return;
        };

        window_node.left = Val::Px(left + trigger.delta.x);
        window_node.top = Val::Px(top + trigger.delta.y);

        trigger.propagate(false);
    }],
)

What went wrong

The window does follow the drag movement but there is a multiplier to the movement speed. This multiplier depends on which child node I drag on. For example, dragging from the empty space will work normally, but dragging with the pointer on child text will result in different speed movement.