[Bug 34517] Context menu is scrolled off screen

[Craig Box]

Public bug reported:
https://launchpad.net/malone/bugs/34517

Affects: abiword (Ubuntu)
       Severity: Normal
       Priority: (none set)
         Status: Unconfirmed

Description:
If I right-click near the bottom of the screen (inside a maximised
AbiWord window), the context menu is drawn with the top three-quarters
blank, two lines, and a "scroll down arrow" item.

After holding the mouse on the down-arrow for a while, the menu all
scrolls into view, and at the end of the scrolling, the menu items have
all filled the empty space, and the down-arrow disappears.

For comparison, I have also tested gedit, where a full context menu
appears as expected.