Comment 39 for bug 697358

@Sebastian Bugiu: the icon reverts to the correct size as soon as I do sth. to my panel in order to work around the bug (e. g. change it's size to 25 px and back to 24 px; check and uncheck "show hide buttons" etc.). So I think your behaviour could very well be caused by 3rd factors, e. g. games/resolution.