Shuji at Zwift HQ here. Thanks for the report. I’ve split it off to dedicated thread. I took at look in your activity history and agree this might be a bug.
A couple points for confirmation:
As you implied, Scotland routes will not unlock a completion badge if you run it, only for rides. That part is expected behavior.
I also found that you have not completed any Scotland routes on a bike either, so we’re looking into why you’re seeing 1 route completed.
If anyone else is seeing routes being incorrectly marked as Completed in the Companion Leaderboard > Worlds > Routes screen, please weigh in here. Let us know which world & route. A screenshot is very helpful. Thanks all!