Support in Ext Js 3.x HtmlEditor component

Hi, We need to solve one problem on the Html Editor of Ext Js 3.4 javascript framework. The framework that we working is avaiable for download in [login to view URL] The problem is a strange behavior when I press Enter to jump to the next line. It make a double break line, and other times it puts the cursor on the typed line. To reproduce this bug, please go in [login to view URL], with the credentials: usuário: gestor senha: doran empresa: Doran ERP (only) When you enter on the system, click the button (in the left of the screen) "Nova mensagem". The app will create a new tab for new mail, and the HTML editor is gonna be in the middle of the screen with signature content. See the print screen in attachment. Any questions, let me know. Thanks!