Hi edwincorea,

This problem happens on special case. 

I think you set style "display:none" for the editor container by <style> target or css file.

you can set it in the container target directly, it shoule work, like  

 <div style="display: none">
            <CE:Editor ID="editor1" runat="server">
            </CE:Editor>
        </div>
 

Regards,

Ken