The WindowsLookAndFeel has vanished in Java 11 (was not public API, anyway). The CoreMediaLookAndFeel was derived from the WindowsLookAndFeel and brings no benefits for the LookAndFeel flavors available in Java 11. Therefore, we do not explicitly configure a LookAndFeel any longer in our default editor.xml , but simply stick to the Swing default. The CoreMediaLookAndFeel is still available and extends the NimbusLookAndFeel now. If you favor this over the Swing default LookAndFeel, you can keep on using it. Of course, you can still use your own custom LookAndFeel or the "system" LookAndFeel.

Change:

The field LayoutTableCellRenderer#headerBorder has been deleted, since the according value was only available in the WindowsLookAndFeel , which has been withdrawn in Java 11.

(CMS-15198)