I will try to type this message in my best English, please forgive me if there are flaws in it.
Since i use "contact Form 7" the WYSIWYG/HTML editor is not working properly. I can no longer switch between WYSIWYG and HTML and the imported text is invisible. If i use CTRL-A i'll see the html code, so it is there. On the frontend there's no problem visible, only in the backend. If i (temporarily) deactivate "Contact Form 7", the problem has been resolved. But I would like to continue to use that plugin.
Does anybody have a solution?
Thanks for helping me out.