Quote:Does anybody know what is wrong here and how I can fix it?
I've no idea if this is a beta specific problem or not - and if it is, hello and welcome to beta ;-) - but the usual way to fix broken chat frames is to turn on the Simple Chat setting from interface options; that sets you back to the standard chat-frame-and-docked-combat-log setup. Once that's done you can usually untick the setting and move the windows back to where you want them.
You don't know what you're talking about.