IanKrL

Yes, JFrame.setDefaultLookAndFeelDecorated( true ) is key. With true:  With false (or, default):  These samples just have dark theme enabled to prove FlatLaf...

All 3: 

On the remote machine, via ssh -X : > DISPLAY=localhost:10.0 That doesn't seem right. I know very little of X but I think what's happening is ssh is faking out...

That seems promising to me. I get the same value for DISPLAY from within the java code using System.getenv("DISPLAY"): > localhost:10.0

In case it helps, here is my test code as it currently stands: ``` import java.awt.Dialog.ModalityType; import java.net.InetAddress; import java.net.UnknownHostException; import javax.swing.JDialog; import javax.swing.JFrame; import com.formdev.flatlaf.FlatDarkLaf; public class SimpleLaf {...

My example screenshots are from the Properties window, indicating the properties of the selection in the Projects window. As you say, the third state indicates a boolean property that is...

If that causes it to render with the '-' icon from FlatLaf (or otherwise clearly different from 'selected'), and the checkbox continues to function as expected when activated (indeterminate->selected->deselected->selected->etc.) then...