Posted by jmaasing on Oct 07, 2015; 1:39pm
URL: https://forum.jogamp.org/JOGL-components-not-displaying-with-some-combination-of-GridBagConstraints-tp4035429p4035432.html

Sounds like the Panel you use do not set minimum/preferred size. Gridbag will not set the size on a contained component unless you set fill.

http://docs.oracle.com/javase/7/docs/api/java/awt/GridBagConstraints.html#fill