Thanks for the note. Yes, it looks a bit strange, but this is our method to collapse groups of intersections that are functionally a single one. (For example, the roundabout technically has an intersection at each entrance and exit.)
In some cases, the visual rendering works well, but this is a good example of a place where it doesn't.
We are working on this issue and hope to have a better solution in our next version.
Best,
Adam