I have come accross this before - favourite you are trying to navigate to is at the same place where you currently are you can check by selecting Show on map
This does not seem to be my problem, as the favorites do show in their correct location, and navigator does not indicate that the destination was reached - it's still in "navigate" mode.
Do the developers sometimes come on here and check messages, or am better off sending them a separate email?
This issue makes the app useless for me at the moment. When I go on a trip, I'd like to be able to save key destinations to my favorites, and then navigate to them as needed.
One more clue here: I just turned on the voice guidance (had it turned off because), and now whenever I want to navigate to the destination it says: "Recalculating. Route not found." in addition to the above symptoms.
"Route not found" appears when your waypoint is not on/near a street or the data in OSM are wrong so that it could never be reached. Just as a test, you could switch to the map (not in navigation mode), select a (part of a) road in order to make it your new favourite to navigate from/to.