Hi
I made my own fix for this problem.
in file \richtexteditor\dialogs\insertimagemap.xml after line 201 add
if(w)self._content.width = w;
if(h)self._content.height = h;
so the
initialize function on areapanel looks like
self.set_src(option.targetimg.GetAttribute("src"));
var w=parseInt(option.targetimg.GetStyle("width"));
var h=parseInt(option.targetimg.GetStyle("height"));
//document.title=[w,h];
if(w)self.set_width(w);
if(h)self.set_height(h);
if(w||h)self.set_overflow("none");
if(w)self._content.width = w;
if(h)self._content.height = h;
// kent