Problem: Firefox 18.0.1 (and prior versions, if I understand correctly what I read on the Internet) doesn’t retain menu choices in a dropdown menu. The choices will disappear when the mouse is moved slightly.
Solution: The solution seems to be the hardware acceleration that is turned on, by default, in Firefox. There is an easy fix for the problem: Turn it off! To do that, do the following:
- Select TOOLS/OPTIONS
- Select the ADVANCED tab
- Under the “Browsing” section, make sure that the checkbox for “use hardware acceleration when available” is UNCHECKED