Description of problem:

Using GNOME panel applets I found the following problem with GTK2 menus:

If you have a menu popping up in a way that would extend beyond the
(lower) screen border, a mostly empty popup appears containing only
the first lines and an arrow to scroll to the remaining lines, even
when the menu itself would fit effortlessly on the screen.

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

gtk2-2.3.2-3

How reproducible:

Easy

Steps to Reproduce:
E.g.:
1. create a panel on the left border
2. move/create the GNOME volume control applet to the bottom of this panel
3. right click on the applet to bring up its menu
  
Actual results:

as described, see attached screenshot

Expected results:

menu is displayed in the normal fashion, as if the applet weren't at
the bottom of the panel