When saving a bookmark, the background for the menu disappears making it hard to view.
Historically when you bookmark a site the menu has a gray background. When I use it now, the background is transparent. Occasionally, it will be gray, but it quickly changes to transparent. Often the URL being saved becomes blurred and unreadable. Sometimes the selected location does the same thing.
Alla svar (2)
You might check what theme you may have installed, see if you have a problem if you turn off theme. View ("Alt+V") > Page Style > Basic page style. If that fixes the problem you have a theme or a style that is a problem. Type "about:addons" into the location bar, then select "Appearances" and disable any installed them so you only have the Default theme.
If you still have a problem:
Turn off transparency in Windows 7
- Personalization (Control Panel): Uncheck enable transparency, Color Intensity (to the Max), Blue Twilight (color)
Control Panel\All Control Panel Items\Personalization then at the bottom Window color Transparency turn off, and adjust color characteristics. (picture)
In order to WOW users that Firefox developers could carry over Aero effects into Firefox they neglected to check to see if users turned off transparency so you have an eclectic combination of transparency on or off. That said you, may have to change colors yourself with a Style. In the following I set colors for my toolbars and in the description comments you will see additional changes for Windows 7 so you won't have transparency where you (or at least I) don't want it.
- Color Toolbar(s) to identify profile -- Themes and Skins for Browser
http://userstyles.org/styles/9514/
Should have said, I'm on a Linux system. CentOS and Gnome 2.