Carried over from the Beta testing, why have beta testing and reporting when issues are not fixed.
This bug is so annoying it has me back tracking, second guessing when trying to navigate a course...
Reported here Navigation is trying to lock on roads, even with this option off - Public Beta Version 18.XX - Public Beta Bug Reports - Garmin Forums
[BUG] My position marker on the map always locks on roads, creating fake track on screen. - Public Beta Version 18.XX - Public Beta Bug Reports - Garmin Forums
18.20 Lock on Roads navigation bug still present - Forerunner 965 - Running/Multisport - Garmin Forums
other have posted about this, unfortunately it is still there in the non-beta release.