We have an issue on the OSRM routing system which appears to be a bug. We have a set of points on which we'd like to use the optimize: true option in order to achieve the best path.
The problem is that when we position one of these points at the very center of a roundabout, the point is "ignored" and pushed to last in the line even though it is closest to the origin point
how it is supposed to work:

expected result:

actual result: