Note also that with Recent Vaadin versions, you can click a row in the update tree (not sure if also applies to the output of AL) to highlight the component - this can help you find the problematic layout or other component.
Note also that with Recent Vaadin versions, you can click a row in the update tree (not sure if also applies to the output of AL) to highlight the component - this can help you find the problematic layout or other component.