Lack of compatibility with the IMTranslator plugin

If you have the imtranslator plugin installed on your navigator, the plugin can automatically add HTML code in your signature. This is not a voluntary action from us. 
For example: 

Solution: the proposed solution is to deactivate the plugin from your navigator, to delete the signature affected by this behavior, and to create a new one. 

Once this has been done, you can reactivate your translator.