Created attachment 418473 [details]
A picture showing the artifacts on the top and bottom panels.
Description of problem:
Gnome panel shows artifacts when background style is semi-transparent
Version-Release number of selected component (if applicable):
Happens every time.
Steps to Reproduce:
1. Right click panel and select Properties
2. Click on Background tab
3. Select Solid color radio button
4. Adjust Style slider
The far left and right parts of the panel becomes semi-transparent and artifacts appear in the middle of the panel.
No artifacts should appear on the panel and the whole panel should become semi-transparent
*** This bug has been marked as a duplicate of bug 589956 ***