package com.vaadin.tests.tickets; import com.vaadin.LegacyApplication; import com.vaadin.ui.HorizontalSplitPanel; import com.vaadin.ui.UI.LegacyWindow; public class Ticket2245 extends LegacyApplication { @Override public void init() { LegacyWindow main = new LegacyWindow("The Main Window"); main.getContent().setSizeFull(); setMainWindow(main); HorizontalSplitPanel sp = new HorizontalSplitPanel(); main.addComponent(sp); } }