http://java.net/jira/browse/MACOSX_PORT-478 submitted 2011/09/29 by ddurrence

.SUMMARY
Application modal dialogs are not always top most.
.STEPS TO REPRODUCE
1. Compile and execute the enclosed program.
2. Click the "Click" button (setVisible(false) for dialogs is not currently working; continue to next step)
3. Click on "Frame B" immediately after clicking the button (there is a Thread.sleep() call which can be adjusted to allow you more or less time for this step to be taken)
4. Position "Frame B" so the dialog is partially obscured.
4. Wait until setVisible(true) is called for the modal dialog
.RESULTS
"Frame B" is front most but is not the active window. The modal dialog is the active window but it is not front most.
If you click on "Frame B", the modal dialog becomes top most.
.VERSION
OS:
10.6.8
Java:
openjdk version "1.7.0-internal"
OpenJDK Runtime Environment (build 1.7.0-internal-javabuild_2011_09_29_03_02-b00)
OpenJDK 64-Bit Server VM (build 21.0-b17, mixed mode)
.REGRESSION
Regression from Java SE 6.Keywords: test-fail-macos
java/awt/Dialog/ModalZOrder/