I have noticed that while using the Substance UI for Java that when I set a new JFrame or JDialog to undecorated it is not honored.
e.g.
frame.setUndecorated(true);
frame.setVisible(true);
When run under Substance shows a decorated frame.
When run under system default L&F shows an undecorated frame.
Anyone have ideas for working around this? I have been unable to find anything on this at the Substance website/java.net forums or already existing in SO.