Posted by gouessej on May 29, 2017; 11:17am
URL: https://forum.jogamp.org/How-to-refer-GL-context-in-AWT-Mouse-Event-tp4037905p4038014.html

Maybe you can disable HiDpi as a first step to see whether it affects your code:
https://github.com/gouessej/Ardor3D/blob/master/ardor3d-jogl-awt/src/main/java/com/ardor3d/framework/jogl/awt/JoglAwtCanvas.java#L65