Comment 2 for bug 89769

Here's a screenshot, interesting enough, as I tried to edit the preferences to uncheck the autohide, well, the picture speaks for itself, the menu was all messed up. The screenshot menu had the same problems, i had to disable the desktop effects to actually be able to save the screenshot.

I don't think a mockup for a fix is needed, I think the shadow effect should be simply disabled for panels that are transparent.