Qtranslate: Second language area clone text from the first language

Hello there,

please i need some support form your side as i use Qtranslate Version 3.4.6.6 and WordPress 4.5.1 running Tesseract theme.
i had a problem with Qtranslate as i use English and Arabic Languages, When I open a new post page to edit and publish an article I find that the content is very messed up. The same text appears in both language content areas. I mean that when i edit the page in English lang then alternate the Arabic tab and edit then publish surprisingly i saw the Arabic content is published in each lang tab

what a solution please ??