Today (again) being on a round track I lost my active guiding. It has happened to both of us on two different phones before. Both on 3.46.2 I cannot simulate it, happens seldom.
But: Restarting the guiding (along a track) it would not do that properly, see screenshot.
I was less then one-third from the finish and Locus went to the nearest point on a new lap.
Hitting nearest poimt or closest point did not help.
Starting guiding from the track list did not help.
Starting navigation with the proper profile did work (but I prefer guiding).