Currently v.1.13.5(beta) when start navigation away from route it looks like this
(with automatic rerouting enabled)
So we have the choice between
- Start
- Nearest point on route
and disable (automatic rerouting)
Do you mean that disable should be replaced by resume?
Navigation would then pause automatic rerouting, until I am back on the route for the first time.
And then continue with automatic rerouting 
I think, I would like such a behavior.