Steps to reproduce:

1. Launch Writer and Accerciser.

2. Turn on event monitoring in Accerciser.

3. In Writer:

   a. Shift+F6 to move from the document to the Formatting toolbar

   b. Right Arrow to move to Apply Style panel

   c. Return to activate the Apply Style list

   d. Up/Down Arrow to select a different style

   e. Alt+Down Arrow to expand the list

   f. Up/Down Arrow to select a different style

Expected results: A11y events (e.g. object:active-descendant-changed,
object:selection-changed) would be emitted as the selected style changes.

Actual results: No events are emitted as the selected style changes.

Impact: Orca cannot present anything to the user who is attempting to change styles.

Note: If having performed the above steps, you Tab to Font Name, Shift+Tab back
to Apply Style, and try again (steps 3c-3f) the expected events are emitted.