In the Java Plug-in Control Panel sometimes (it seems more times than not)
the edit fields are not accessible. That is you can not give the edit fields
focus (can't enter data in edit fields).

To reproduce:
Start the Control Panel.
Enter some data in a edit field (ex: Java Runtime Parameters), if you can.
Click Apply.
Quit and restart the Control Panel.
Try to give focus to a edit field to enter data.
You may or may not be able to do this (get focus to edit box).
See the Work Around.

I did not see this problem in ladybird, only merlin.