'More Information' link on security dialogs doesn't work on Linux

- load any signed applet
- try to click 'More Information' link
- Java console will show

Sep 01, 2014 11:36:02 AM sun.awt.X11.XToolkit processException
WARNING: Exception on Toolkit thread
java.lang.NullPointerException
        at java.awt.KeyboardFocusManager.getCurrentKeyboardFocusManager(KeyboardFocusManager.java:222)
        at java.awt.KeyboardFocusManager.getCurrentKeyboardFocusManager(KeyboardFocusManager.java:216)
        at java.awt.Window.isActive(Window.java:2336)
        at sun.awt.X11.XContentWindow.handleButtonPressRelease(XContentWindow.java:173)
        at sun.awt.X11.XBaseWindow.dispatchEvent(XBaseWindow.java:1092)
        at sun.awt.X11.XBaseWindow.dispatchToWindow(XBaseWindow.java:1066)
        at sun.awt.X11.XToolkit.dispatchEvent(XToolkit.java:475)
        at sun.awt.X11.XToolkit.run(XToolkit.java:584)
        at sun.awt.X11.XToolkit.run(XToolkit.java:505)
        at java.lang.Thread.run(Thread.java:745)