Thunderbird missing top menus

[Leszek Lesner]

Am Mittwoch, 28. November 2012, 13:18:12 schrieb Lars Noodén:
> On 11/28/2012 01:07 PM, Leszek Lesner wrote:
> > Am Mittwoch, 28. November 2012, 12:19:23 schrieb Lars Noodén:
> >> On 11/28/12, John Hupp <lubuntu at prpcompany.com> wrote:
> >>> press Alt-F to see if the File menu appears.
> >> 
> >> I hadn't thought to try that, it does show the menus.  Very strange.
> >> They all disappear again when anything is pressed.  This makes
> >> Thunderbird usable but very awkward in that the keyboard must be used
> >> not just the mouse alone.
> > 
> > Perhaps thunderbird ships with a unity global menu plugin that keeps
> > activating itself.
> > Try to take a look in the addons manager and disable anything that stated
> > to be a global menu integration or unity integration.
> 
> There were two add-ons that seemed related to Unity, but turning them
> off and restarting Thunderbird did nothing to affect the menus.
> 

Perhaps they are turned off in the settings of thunderbird somewhere. 
Try rightclicking on the toolbar or a little bit above or try navigating 
through the menus with alt to find an option that might be turned off.