I do not use the navigation too much but here is what I see, looks very strange to me.
I create a route from my location to another location then I go back to menu and avoid certain roads, if the navigation needs to recalculate because I made a mistake in a turn it will pick the same road I tried to avoid.
I need to go back into the menu and click on avoid that road.

I'm running version 4.62.
Can someone check in newer version if this annoying problem exists?

 

Anyone?

 

Try the "Detour" option.