FULL PRODUCT VERSION :
java version "1.8.0_161"
Java(TM) SE Runtime Environment (build 1.8.0_161-b12)
Java HotSpot(TM) Client VM (build 25.161-b12, mixed mode, sharing)

ADDITIONAL OS VERSION INFORMATION :
Windows 7 32-bits
Windows 7 64-bits

EXTRA RELEVANT SYSTEM CONFIGURATION :
French keyboard

A DESCRIPTION OF THE PROBLEM :
Shift or Capslock stop working in java.awt.Textfield, leading to severe text input issue.
It always happens on Windows 7, either 32-bits ou 64-bits.



STEPS TO FOLLOW TO REPRODUCE THE PROBLEM :
Send accentued keystrokes, whith keys combination like "ö ô ñ" to java.awt.Textfield
Then, Shift or Capslock, Alt Gr don't work anymore in that Textfield.
Also Control shorcuts behave incorrectly.

Character "ù" doesn't trigger the bug as it's typed on a single key, on the french keyboard.


EXPECTED VERSUS ACTUAL BEHAVIOR :
EXPECTED -
Shifted keystrokes should be displayed in the Texfield.

ACTUAL -
It continue to works like if the Shift / Caps / Alt Gr key was not pressed, but it is.

Also shorcuts like [Control]+[key] behave differently.
For instance, Control+v pastes clipboard but also add an uneeded additionnal "v"



REPRODUCIBILITY :
This bug can be reproduced always.

---------- BEGIN SOURCE ----------

import java.awt.Frame;
import java.awt.TextField;
import java.awt.event.*;

public class TestKeysWin7 extends Frame implements WindowListener
{
MyField field;

    public static void main(String args[])
{
TestKeysWin7 app = new TestKeysWin7();
}

public TestKeysWin7()
{
field = new MyField();

setVisible(true);
add(field);
setSize(800, 100);

addWindowListener(this);
}

    public void windowOpened(WindowEvent e) {}

    public void windowClosing(WindowEvent e)
{
System.exit(0);
    }

    public void windowClosed(WindowEvent e) {}

    public void windowIconified(WindowEvent e) {}

    public void windowDeiconified(WindowEvent e) {}

    public void windowActivated(WindowEvent e) {}

    public void windowDeactivated(WindowEvent e) {}
    
    
    public class MyField extends TextField implements KeyListener
{
public MyField()
{
addKeyListener(this);
}

public void keyPressed(KeyEvent e)
{
int code = e.getKeyCode();
System.out.println("Pressed key [" + KeyEvent.getKeyText(code) + "]");
}

public void keyReleased(KeyEvent e)
{
int code = e.getKeyCode();
System.out.println("Released key [" + KeyEvent.getKeyText(code) + "]");
}

public void keyTyped(KeyEvent e)
{
char ch = e.getKeyChar();
int mod = e.getModifiers();

if (mod > 0)
{
System.out.print("Typed keys [" + KeyEvent.getKeyModifiersText(mod) + "]");
System.out.print(" char [" + ch + "]");
System.out.println("");
}
else
{
System.out.println("Typed char [" + ch + "]");
}
}
}
}
---------- END SOURCE ----------