Created attachment 766 [details] Test case to reproduce The position of the window is wrong after a resize in its container (e.g. another component has been made visible in the same container). Described also here: http://forum.jogamp.org/GWindow-position-issue-after-resize-since-2-3-2-td4035863.html Reproducible on Mac OS X El Capitan with JDK 1.8.0_60. Attached is a simple test-case to reproduce it. It shows a JFrame with Gears and a button at the top. When the button is clicked it makes a panel at the south visible and you can observer the position of the glwindow being wrong.