Created attachment 878969 [details]
Screenshot

Description of problem:

The icon which shows the list of recently closed windows contains a linebreak between the icon and the down-arrow.  This makes it too high enlarging the whole menu line.

E.g. in the attached image, the blue icon is the broken one, while the green one (show-recently-closed tabs) is ok.  Both icons should be one line only.

First seen in FF 27 afair.


Version-Release number of selected component (if applicable):

firefox-28.0-3.fc20.x86_64


How reproducible:

100%


Steps to Reproduce:
1. change one of the bars (menu-, navigation-, bookmarkbar) and add this icon


Actual results:

height of menubar gets nearly doubled