CloudCompare forum

I don't know what setting was enabled, but now I am unable to drag the point cloud using the right mouse button. It seems like the point cloud entity is fixed in the center, and I can only rotate it by holding down the left mouse button and zoom in/out using the mouse scroll wheel. The right mouse button function is not working properly.

One reason could have been that you entered the 'bubble view mode' (shortcut 'b'). But you would see an 'exit' button in the top left part of the screen (or you can press 'b' again)