fixed issue 15

src/view/MainView.java

@@ -557,6 +557,7 @@ public class MainView {
         JPanel menue = new JPanel();
         menue.setLayout( null );
         menue.setPreferredSize( new Dimension( 410, 500 ) );
+        menue.setMinimumSize( new Dimension( 410, 300 ) );
         menue.add( stepForward );
         menue.add( stepForwardInto );
         menue.add( stepForwardOut );