--- old/src/java.desktop/share/classes/javax/swing/plaf/basic/BasicMenuUI.java	2017-11-06 20:55:17.107180400 +0530
+++ new/src/java.desktop/share/classes/javax/swing/plaf/basic/BasicMenuUI.java	2017-11-06 20:55:15.294355100 +0530
@@ -226,6 +226,11 @@
         return (MenuKeyListener)getHandler();
     }
 
+    public Dimension getMinimumSize(JComponent c) {
+        return (((JMenu)menuItem).isTopLevelMenu() == true) ?
+            c.getPreferredSize() : null;
+    }
+
     public Dimension getMaximumSize(JComponent c) {
         if (((JMenu)menuItem).isTopLevelMenu() == true) {
             Dimension d = c.getPreferredSize();