[macosx] VoiceOver says nothing as a tree is navigated, expanded/collapsed, selected, etc

http://java.net/jira/browse/MACOSX_PORT-661 submitted 2011/11/03 by Pete Brunet

.SUMMARY
VoiceOver says nothing as a tree is navigated, expanded/collapsed, selected, etc.
.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 the tab key until focus is on the sixteenth button (Tree demo).
5. Press the space bar to activate the Tree demo.
6. Press the tab key repeatedly until focus is on the tree control.
7. Do various tree interactions such as navigate, expand/collapse, selection.
.RESULTS
VoiceOver says nothing.
.VERSION
OS: Mac OS X version
OS:
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.