Yes, I checked that image. It's very strange.

 

Do you have the problem with CuteEditor example files?

 

Or do you use the following class in your style sheet?

 

.button {MARGIN: 1px; VERTICAL-ALIGN: middle; PADDING: 0px}
.buttonover {BORDER: #0A246A 1px solid; BACKGROUND-COLOR: #B6BDD2; PADDING: 0px; MARGIN: 0px; VERTICAL-ALIGN: middle;}
.buttondown {BORDER-RIGHT: buttonhighlight 1px solid; BORDER-TOP: buttonshadow 1px solid; BORDER-LEFT: buttonshadow 1px solid; BORDER-BOTTOM: buttonhighlight 1px solid; MARGIN: 0px; VERTICAL-ALIGN: middle; PADDING: 0px;}