right click on 3d scene sometimes also makes it pan

[h0uter]

Description

1. Using the example for 3d scene right click I run into the following bug: Sometimes panning is also triggered on right click leading to a chaotic experience if a user leaves the context menu with the mouse.

2. I expect panning not to be triggered at the same time as triggering the context menu (right click)
3. panning is triggered sometimes