--- /dev/null
+package com.itmill.toolkit.tests.tickets;
+
+import com.itmill.toolkit.Application;
+import com.itmill.toolkit.ui.Button;
+import com.itmill.toolkit.ui.Window;
+import com.itmill.toolkit.ui.Button.ClickEvent;
+
+public class Ticket2526 extends Application {
+
+ @Override
+ public void init() {
+ final Window main = new Window();
+ setMainWindow(main);
+ Button b = new Button("Add windows");
+ b.addListener(new Button.ClickListener() {
+ public void buttonClick(ClickEvent event) {
+ main.addWindow(new Window());
+ }
+ });
+ main.addComponent(b);
+ }
+}