I'm running XFCE on Ubuntu 16.04.5. Two days ago the menu bar disappeared randomly in LibreOffice programs only, still worked in other programs like FileZilla, Thunar, Thunderbird, etc. But in LibreOffice programs Writer, Calc, and others, menu bar is completely gone:

I chocked it up to something in LO, so I left it until I had a chance to fix.

This morning I start up the computer and now Thunderbird is missing it's menu bar, just gone. It was there yesterday, but today gone. Also, my extension buttons are gone from the toolbar as well, only default buttons are there.

But Menu Bar is selected as there in the right click menu on the toolbar.

FileZilla and Thunar still have their menu bars. So do other programs. Starting up GIMP it still has it's menu:

I'm figuring something in GTK or another subsystem has been corrupted, but I don't know what controls those items, so I'm not sure where to begin.

I've tried a couple things, none of which have fixed it:

compiz --replace

Just replaces everything with a blue bar, still no menu bar.

xfwm4 --replace

No change at all.

sudo apt-get remove appmenu-gtk3 appmenu-gtk appmenu-qt unity-gtk3-module unity-gtk2-module

Same, no change.

EDIT

If I remove libreoffice-gtk and start LO it comes up with pre-GTK menu:

sudo apt-get remove libreoffice-gtk

But once I add it back it goes away again. Is this a problem with GTK and how would I fix that in general?

EDIT

Re-Installing thunderbird does not fix the problem with thunderbird. I've also tried re-installing xubuntu-desktop with no avail.

  • Why don't you click the image icon above the question box area to include your image more conveniently (for you and the people who view your question)? – DK Bose Nov 2 at 12:31

For Thunderbird, right-click at the top of the screen (where the menubar would be) and check “Menu Bar”.

The answer for LibreOffice seems to be disabling OpenGL rendering, go to Tools > Options > View > uncheck “Use OpenGL for all rendering”. It is probably this bug

Hope this helps!

Press the alt button for menubar.

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