Test bundles:https://java.se.oracle.com/artifactory/re-release-local/jdk/12/24/bundles/osx-x64/jdk-12-ea+24_osx-x64_bin.dmg

Steps to reproduce:
1. Open Voice Over
2. Run java -jar SwingSet2.jar from demos.
3.Tab until the Table icon has focus. Press 'space' to choose.
4.Tab until the "Table Demo" tab has focus. Press 'space'. Press 'tab'. "Reordering allowed" should have focus.
5.Tab to the Printing/Header textfield. Verify that you can type in some text.
6.Continue tabbing until focus moves to the table. The table should show focus.
7.Press the down arrow. "Mike Albers" should have focus.
8.Use the right and left arrow keys to navigate between cells.
9.Set focus to a text cell (e.g. someone's first name). Press space to edit. Type some text. Hit 'enter' and verify the text has been changed.
10.Press the 'Page Up' and 'Page Down' keys (if available on your keyboard); verify that the Table scrolls up and down, page by page.

Actual results:
At step 8 and step 10:VO always read "selection replaced 6 items selected",when using the left/right and page up/page down keys to navigate the table items.