This bug was fixed in the package gtk+3.0 - 3.4.2-0ubuntu0.5
--------------- gtk+3.0 (3.4.2-0ubuntu0.5) precise-proposed; urgency=low
* Add debian/patches/gtk-notebook.patch: Fix some keyboard navigation breakage with GTK Notebook issue, based with upstream level awailable fix in GTK+ 3.5.6. (LP: #1061419) -- Attila Hammer <email address hidden> Thu, 04 Oct 2012 09:07:10 +0200
This bug was fixed in the package gtk+3.0 - 3.4.2-0ubuntu0.5
---------------
gtk+3.0 (3.4.2-0ubuntu0.5) precise-proposed; urgency=low
* Add debian/ patches/ gtk-notebook. patch: Fix some keyboard navigation
breakage with GTK Notebook issue, based with upstream level awailable fix
in GTK+ 3.5.6. (LP: #1061419)
-- Attila Hammer <email address hidden> Thu, 04 Oct 2012 09:07:10 +0200