If a robotic arm is attached to the rover, the selector for the secondary control panel (highlighted in picture) will cycle through all possible instruments.
- Legacy ID
Attach a robotic arm to a lander - may also occur with rovers
I can confirm the issue being caused only when a joystick is connected to computer (Logitech WingMan Extreme Digital 3D in my case). Tested against development build 0.8.0223, on Windows 7 64-bit.