indicator icons light up and don't go back anymore

Hello,

normally when clicking an icon it light up a little and when releasing the mouse button, it goes back to the normal color. The indicator icons though don't go back to the normal color anymore, they remain lit. I have also attached a short movie take with gtkrecordmydesktop to show the issue.
Tested with both 0.4.0 and the trunk version (Avant Window Navigator 0.4.1-rewrite-bzr799+201012130405).
Details about the system:
Ubuntu 10.10 64 bit with everything up to date (as of 15 Dec. 2010).
Video Board is an ATI HD 5650
OpenGL vendor string: ATI Technologies Inc.
OpenGL renderer string: ATI Mobility Radeon HD 5000 Series
OpenGL version string: 4.0.10237 Compatibility Profile Context
/etc/alternatives/x-window-manager -> /usr/bin/metacity
fglrx Driver Packaging version: 8.78.3-100920a-105558C-ATI
Compositing is enabled.