A frame has a button. There's ActionListener set on the button. The listener minimizes
the frame and then restores it again making it unfocusable. If one clicks the button
with the space key, the button remains pressed after the frame is restored. This can
be reproduced not allways. I faced with the bug on Solaris/Linux, GNOME, with
XAWT (JDK6 b102).

Here's the testcase:

1. Compile and run the testcase
2. Press the button with the space

If after the frame is restored the button looks pressed, then
the bug is reproduced, if it doesn't - repeat the test.

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import java.awt.*;
import java.awt.event.*;

public class FrameMinimizeTest extends Frame implements ActionListener {

public FrameMinimizeTest() {
Button b = new Button("Click me");
b.addActionListener(this);
add(b);
setSize(200, 200);
setVisible(true);
}

public void actionPerformed(ActionEvent ae) {
setExtendedState(Frame.ICONIFIED);
setFocusableWindowState(false);
try { Thread.sleep(1000); } catch (Exception e) {}
setExtendedState(Frame.NORMAL);
}

public static void main (String args[]) {
FrameMinimizeTest test = new FrameMinimizeTest();
}
}
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