A customer reported input chars doesn't show up in the textfield where caret is flickering.

CONFIGURATION:
OS :Windows 7 (untimate)
Browser : IE8
JDK : JDK5u34 (jdkfb-1_5_0_34-fcs-bin-b03-windows-i586-p-17_jan_2012.exe)

REPRODUCE:
1.Compile the attached App1.java and App2.java.
2.Open the attached App.html in IE8.
3.The upper textfield(App1.java) shows up and l
   ower textfield(App2.java) is under loading.
   (please see the attached during-app2-loading.png)
   Click the textfield while the lower textfield is loading.
   A caret should be flickerring in the upper textfield.
4. The lower texitfield shows up with label, "Ready".
   Try to input chars. in keyboard

EXPECTED:
 The chars in the above step4 show up in the upper textfield

ACTUAL :
 The chars in the above step4 show up in the lower textfield.