Thanks for your help. I also noticed some strange things happening when I
used Control F7. As you say, it sometimes appears to tab you to the next
control. Anyway, deleting the preferences file appears to have fixed things.
And to answer your question, about VoiceOver reading message content vs.
h
Hello Fred,
If your Tab key action has changed, you may have pressed Control-F7. This
switches your Tab key action between moving keyboard focus between "Text boxes
and lists only" and "All controls". Check whether pressing Control-F7 restores
your Tab key to the focus behavior that you expect