I've reported this to support but they don't seem to care.
There is a main road where I live with footpaths either side of it. Whenever I try to create a route that crosses this road i.e south of town to north, it sends me off on a 25 mile wild goose chase to get to a point when Garmin thinks it is where I should cross.
"Working as intended"
I can no longer create routes that head north from my house.
This also happens with road cycling routes. It won't let me cycle down a main road.