Posted by karelknoes on May 11, 2012; 3:06pm
URL: https://forum.jogamp.org/GLCanvas-draws-over-Swing-components-on-Mac-tp3973879p3980189.html

An interesting discovery: GLCanvas does behave well in our desktop application, which starts in a JFrame instead of JApplet. The applet and desktop application share almost all their UI code.

It may seem that the problem is introduced by the java browser plugins.