This bug happens for me. I'm using xubuntu 12.04 (xfce) and Greybird style (under Settings -> Settings Manager -> Appearance -> Style; is that what people mean by theme? I don't see an Ambiance option).
This bug happens for me. I'm using xubuntu 12.04 (xfce) and Greybird style (under Settings -> Settings Manager -> Appearance -> Style; is that what people mean by theme? I don't see an Ambiance option).