JAWS 16 known issues. Just in case you missed it.
Dialog prompt text windows are not spoken in most instances.
The most eratating thing is the announcement of the word Menu bar Menu bar Menu bar when focus is lost. Menu bar is heard every time the user presses his tab key.
Work around is to use insert+F4 to shut down JAWS and restart it with your JAWS startup hotkey.
Until focus is lost again.