Is it possible to make a non-resizable panel Plasmoid?

It is possible to set the minimum and maximum size like so:

PlasmoidItem {
    fullRepresentation: Item {
        Layout.maximumWidth: 500
        Layout.maximumHeight: 600
        Layout.minimumWidth: 500
        Layout.minimumHeight: 600
    }
}

…however the resize cursor is still visible on the edges, making this seem very hacky.

The kiosk framework, with an immutable panel, might be something to try.