Class Diagnram with RT code synchronization

Hello everybody,

I am a new user of VisualParadigme Community Edition. I have create a class diagram with reverse engeneering from my java project : it works fine!
Now, I want to create a new class diagram with RT code synchronization. I drag and drop the classes from the Class Repository to the Diagram : I can see the source code in the Editor Pane excepted for the class which have a recursive association (ex: my main class MyClass declares an attribute Myclass mc;). Is it a limitation for Community Edition? If not how can I do to see the source code for these classes?

Thank in advance for any help. Best regards