Issue: Round trip u-turns

[F Nick]

I thought this issue was fixed?Just using roundtrip on the webapp and its adding u-turns!

[Con Hennekens]

Sometimes it cannot be avoided

[Corjan Meijerink]

We did almost entirely rule it out but as @Con-Hennekens showed, this one makes sense.

That said, it can still happen but way less frequently than before.