Robot Arm Example bugs on Qt Design Viewer

Tested with Google Chrome as the default browser.

1. When pressing the 'Dark Mode' button, the background goes black but the switch button does not go to the correct position
2. Sometimes when pressing the different poses, nothing happens. For example, if I press 'POSE 1', sometimes nothing happens but after that if I press 'POSE 2', the arms goes immediately to the 'POSE 1' position and the animation for 'POSE 2' starts.
3. Claw -button does not work correctly either. When I click it, it goes green but do not go to the correct switch position. The Claw also does not move. If I click the button again, the color of the button goes back to grey and the claw goes immediately in closed position and the opening animation starts.

Rotation switches seem to work correctly.