Maximize Editor gets covered

The problem is the overflow:auto
Please, file a ticket about it.

Part of the problem I think arises from this issue http://dev.fckeditor.net/ticket/174. Looking through the changeset http://dev.fckeditor.net/changeset/487 it seems like the below code is causing the problem in the fckfitwindow.js

      // Is the editor still not on the top left? Let's find out and fix that as well. (Bug #174)
      var editorPos = FCKTools.GetWindowPosition( eMainWindow, eEditorFrame ) ;
      if ( editorPos.x != 0 )
         eEditorFrameStyle.left = ( -1 * editorPos.x ) + "px" ;
      if ( editorPos.y != 0 )
         eEditorFrameStyle.top = ( -1 * editorPos.y ) + "px" ;

Ok so the previous post was only to clarify why the page is displaying the way it is. The other part of this is in the line below from fckfitwindow.js

this._EditorFrameStyles = FCKTools.SaveStyles( eEditorFrame ) ;

The SaveStyles() function basically looks for the "class" or inline "style" attributes defined on the element, saves it to an object and clears out the styles on the page. This will then allow the editor to maximize normally. In your case the <div id="content"> does not have any "class" or "style" attribute set on it. In turn the SaveStyles() fails to clear out the style setting on this div which leaves it positioned where it is on the page and screws up the maximize editor function.

Modifying your div to something like <div id="content" class="content-class"> and changing the CSS to define .class{} instead of #class{} might take care of the issue. I did a similar test run and it seemed to fix the problem.

Hope that helps,
Shri