[macosx] Nothing heard from VoiceOver when tabbing between a nested tab group and a parent tab group

http://java.net/jira/browse/MACOSX_PORT-641 submitted 2011/11/03 by Pete Brunet

.SUMMARY
Nothing heard from VoiceOver when tabbing between a nested tab group and a parent tab group
.STEPS TO REPRODUCE
1. Start VoiceOver (Command F5), using default settings, e.g. the VO cursor tracking the focused control.
2. cd ~/OpenJDK/macosx-port/build/macosx-universal/
3. bin/java -jar /Library/Java/Demos/JFC/SwingSet2/SwingSet2.jar
4. Press tab until get to the second button on the toolbar.
5. Press the space bar to activate the buttons demo.
6. Press tab repeatedly until get to the first tab group.
7. Press tab again to get to the nested tab group.
8. Press shift + tab to move back to the outer tab group.
9. Press tab to move back to the inner tab group.
.RESULTS
Nothing is heard from Voice over on steps 8 and 9.
.VERSIONOS:
OSX 10.7.2
Java:
openjdk version "1.7.0-internal"
OpenJDK Runtime Environment (build 1.7.0-internal-petebrunet_2011_10_08_00_36-b00)
OpenJDK 64-Bit Server VM (build 21.0-b17, mixed mode)
.REGRESSION
Provide information on steps taken to isolate the problem.
Describe circumstances where the problem occurs or does not occur,
such as software versions and/or hardware configurations.
.NOTES
Attach any relevant screen shots, crash logs, or console output.
Describe anything else that might be useful in resolving the problem,
such as leads on diagnosis, any workarounds, or first observed configuration.