The Processing-based orientation visualizer examples doesn't display properly. Pitch and roll are only shown independently when yaw is 0 or 180 degrees. When yaw is 90 degrees, they display the same!

I made this video demo to show the problem:

https://www.youtube.com/watch?v=SHJ2n1Kwe58

Here is the page where the orientation visualizer code appears.

https://www.arduino.cc/en/Tutorial/Genuino101CurieIMUOrientationVisualiser