When a JTextField with a custom document set (using setDocument) is bound in beansbinding, the document is ignored. For instance, I've a custom document converting the characters to upper case, but when i bind the JTextField to a bean, and then type something in the text field, the document is just ignored and the characters are shown with the normal case. Additionally, I don't know if this would be another issue, but when I set the sourceObject of the binding, the JTextField doesn't accept editing anymore. I can provide more info/test case, if needed.