Hmmm, I say round trip but I did have the end about 200 metres from the start just to not confuse the gps but it still navigates to the final point as the next point and then calls it a day. What I do not understand is that the Routes are directional so I'm perplexed how this problem occurs. It appears that the Oregon is simply ignoring anything other than what shaping point is the closest.
All perfectly normal, reasonable and consistent with how Garmin handhelds have always worked
It seems that my attempt of clearing up the misunderstanding about User1123's new question in post #8 did not resolve anything. You are still replying to another situation than he asked about.
I do not think I have seen that behaviour. I have of course seen the behaviour you describe, but that is something else.