What do you want to say?
Your bookmark toolbar isn't shown?
Have you look for Display>Toolbars to see if the bar is in the list?
If the toolbar isn't present in the list try in Bookmark>Options in menu and Enable the bookmark bar
If the bar is present in the list
Is-it unchecked?
If checked, have you tried to uncheck and then check it?
Curious, never heard about a similary problem.
A+
Mozilla/5.0 (x11; U; Linux x86_64; fr-FR; rv:38.0) Gecko/20100101 Ubuntu/12.04 K-Meleon/76.0
Web:
http://jujuland.pagesperso-orange.fr/
Mail : alain [dot] aupeix [at] wanadoo [dot] fr
Ubuntu 12.04 - Gramps 3.4.9 - Harbour 3.2.0 - Hwgui 2.20-3 - K-Meleon 76.0 rc