Steps to reproduce the issue:

- run the applet (use the following source code) in Internet Explorer 7.0
- resize the browser by dragging it at bottom right corner
- the button flickers

Additional information:

>java -version
java version "1.7.0-ea"
Java(TM) SE Runtime Environment (build 1.7.0-ea-b07)
Java HotSpot(TM) Client VM (build 1.7.0-ea-b07, mixed mode, sharing)

Couldn't reproduce the issue in Firefox.

Here's the source code of the applet.

Test.html
---------- BEGIN SOURCE ----------
<applet code = Test.class
width = 400
height = 400>
</applet>
---------- END SOURCE ----------

Test.java
---------- BEGIN SOURCE ----------
import java.applet.Applet;
import java.awt.*;
public class Test extends Applet{
public void init()
{
setBackground(Color.BLUE);
setLayout(new FlowLayout());
add(new Button("button"));
}
}
---------- END SOURCE ----------