atlantic borderlayout east/west always rotated by 90deg (since 9.6.0)

    <!-- added overflow style to make the effect more obvious -->
    <borderlayout width="400px" height="200px" style="overflow: visible;">
        <west title="Test" width="100px" collapsible="true" closable="true">
            West Content
        </west>
        <center/>
        <east title="Test" width="100px" collapsible="true" closable="true">
            East Content
        </east>
    </borderlayout>