When creating a new component (TextImage component in an article page) the Dialog always used the default language. If in the Author Instance, I set a language (not the default one. GE in the demo-project) and create a new TextImage component, the content will be stored as default language (no _de for the node property name). If I edit the previously created component, the fields I just defined (Subheading, text) are gone (Now the dialog recognize that he should use GE).