Mozilla Connect

Ever since the latest update Thunderbird looses its menu bar after a little while. Only way to get it back is restarting the app. This does not feel good. What is the proper solution? Or is it a flaw that needs to be resolved in the code (of which I ...

why is my option to choose to view the inbox no longer available in the window pull down menu? When I close the overview of all my inboxes because I am concentrating on one particulair e-mail message, I used to be able to view my inboxes again by cho...