Toggling item and menu bar simultaenously seems to cause window to grow

[npwoods]

Bug Description

This seems to be a weird effect where toggling both a menu bar and an item in a VerticalBox can cause a window to grow, at least on Windows. This does not reproduce on SlintPad.

The following five images show the initial state, and what happens when the items ("stuff") is toggled four times.

Reproducible Code (if applicable)

import {
    HorizontalBox,
    VerticalBox,
    ListView,
    LineEdit,
    Button,
} from "std-widgets.slint";

export component MainWindow inherits Window {
    property <bool> stuff-visible;

    if stuff-visible: MenuBar {
        Menu {
            title: @tr("MenuBar" => "File");
        }

        Menu {
            title: @tr("MenuBar" => "Edit");
        }
    }
    VerticalBox {
        alignment: end;

        Button {
            text: "Toggle Stuff";
            clicked => {
                stuff-visible = !stuff-visible;
            }
        }

        if stuff-visible: Rectangle {
            vertical-stretch: 0;
            HorizontalBox {
                alignment: start;
                Text {
                    text: "Stuff at bottom";
                }
            }
        }
    }
}

Environment Details

• Slint Version: Tip
• Platform/OS: Windows
• Programming Language: Rust
• Backend/Renderer: Default

Product Impact

No response