I sometimes notice that the combination of OSM/cycle.travel/my Wahoo Elemnt Bolt v2 doesn't handle parts of routes correctly but I don't know which is to blame!
I will give examples like this as I notice them.
On my ride yesterday a crossroads was not picked up. The Wahoo told me to carry on for 3.3 km, with no warning that I had a junction to stop at along the way!
It was obvious on a sunny afternoon but might not have been at night or in misty conditions.