--- old/src/java.desktop/unix/classes/sun/awt/X11/XToolkit.java	2016-08-30 16:05:14.669994761 +0300
+++ new/src/java.desktop/unix/classes/sun/awt/X11/XToolkit.java	2016-08-30 16:05:14.533994766 +0300
@@ -1570,6 +1570,10 @@
                                   Integer.valueOf(getMultiClickTime()));
             desktopProperties.put("awt.mouse.numButtons",
                                   Integer.valueOf(getNumberOfButtons()));
+            if(SunGraphicsEnvironment.isUIScaleEnabled()) {
+                addPropertyChangeListener("gnome.Xft/DPI", evt ->
+                                                     localEnv.displayChanged());
+            }
         }
     }