1. A concise explanation of the problem you’re experiencing.
We have a feature where we draw a straight line between locations on or above the Earth. This results in a strange-looking upside-down V shape for sites across the world when the map is made to be 2D. Is this a bug?
2. A minimal code example. If you’ve found a bug, this helps us reproduce and repair it.
Run example here and switch to 2D or Columbus mode.
3. Context. Why do you need to do this? We might know a better way to accomplish your goal.
Drawing straight (Euclidean) lines between arbitrary positions. Ideally we want the line to be straight-looking whether in 3D or 2D mode.
4. The Cesium version you’re using, your operating system and browser.
Most recent Cesium, using Chrome on Windows 10.