main.slint

struct Port {
    x: length,
    y: length,
    name: string,
}

component Node inherits Rectangle {
    in-out property <[Port]> ports;
    private property <Port> port: ports[0];

    width: 100px;
    height: 100px;

    VerticalLayout {
        HorizontalLayout {
            Text {
                text: port.name;
            }
        }

        Rectangle {
            background: #f8e45c;
            min-width: 15px;
            height: 20px;

            init => {
                // This line crashes
                port.y = self.absolute-position.y;
            }
        }
    }
}

export component Demo inherits Window {
    background: #242424;
    min-width: 800px;
    min-height: 400px;

    Node {
        ports: [
            { name: "Port1" },
        ];
    }
}

slint.json

{"main":"main.slint","mappings":{},"slint_version":"1.9.2"}