I came across and issue in that the button icon span "rrssb-icon" when the button is medium size overlaps below the button and so can overlap content below the buttons and also invokes the hover action. You can see the issue on your demo site and also in the images attached.
I came across and issue in that the button icon span "rrssb-icon" when the button is medium size overlaps below the button and so can overlap content below the buttons and also invokes the hover action. You can see the issue on your demo site and also in the images attached.
Highlighted in firebug: