It appears that the "wormhole" is off center. If you zoom the page, you'll notice that each step brings the tunnel closer to the center of the screen.
At zoom level 6 (counting from 100% as level zero) you are viewing from inside the tunnel, but only just. At zoom level 8 (maximum), the view is almost at the center of the tunnel.
If I had to take a guess, the page fails to calculate the center of the viewport, using (0,0) as its target coordinate; but (0,0) is top-left.
At zoom level 6 (counting from 100% as level zero) you are viewing from inside the tunnel, but only just. At zoom level 8 (maximum), the view is almost at the center of the tunnel.
If I had to take a guess, the page fails to calculate the center of the viewport, using (0,0) as its target coordinate; but (0,0) is top-left.