I filed bug 949029 earlier and found that this happens only when touchpad is being used, is the issue you are experiencing the same one?
-- You received this bug notification because you are a member of Desktop Packages, which is subscribed to gtk+3.0 in Ubuntu. https://bugs.launchpad.net/bugs/949414 Title: menu items are not highlighted Status in “gtk+3.0” package in Ubuntu: Confirmed Status in “gtk+3.0” source package in Precise: Confirmed Bug description: In GTK applications menu items are not always highlighted on mouse over (orange background). 12.04 - 20120307 When using touchpad, the menu items are not highlighted. When using a USB mouse or TrackPoint the widgets are reacting properly. STR: 1. Open nautilus 2. Open the "File" menu, OR right-click in the window, OR open any of the option menus inside the Preferences window. 3. Move down through the menu using touchpad. 4. Click on a sensitive menu item. Actual results: 3. The first sensitive item is highlighted, but (usually) none of the other sensitive items are. 4. The item is highlighted only once you click it. Expected results: Highlight should follow the mouse If global menu is disabled (env UBUNTU_MENUPROXY= ) , the menus do not react to the movement at all. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gtk+3.0/+bug/949414/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : desktop-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp
