X11 windows jump when openGL application starts

Submitted by Stefan Schaal

Assigned to Jeremy Huddleston Sequoia

Description

Running XQuartz 2.7.9 (xorg-server 1.17.4) on Mac OS X 10.11.6. Here is the issue, easiest given as an example: Try the following commands from command line:

xterm -geometry 20x20+100+100 & glxgears

Result: xterm window is created properly. BUT when glxgears starts, xterm window jumps to location +200+200

This can be replicated with other X11 windows, e.g., emacs -geometry 20x20+100+100

Both xterm and glxgears come from /opt/X11 path.

Any idea how this can be fixed? Some of my windows jump off-screen.

Version: 2.7.9 (xserver-1.17.4)