Welcome kakobe.
Perhaps this recent discussion will be of value.
Do you have a copy of your aia that worked? Please try it and tell us if route renders.
In addition to the advice in the above thread in your instance there might be a timing issue of when your Marker coordinates post or are available to Navigate.
Also this behavior of your latest app version could be an ORS server error. ORS use 'donated' servers and when they get overloaded with calls from many users they sometimes are momentarily unavailable (for a few ms) .
Also this could be an issue with how you use the LocationSensor LocationChanged works. updating every second might be too fast for a LocationChanged event to occur or too fast to update the ORS server. Change 1000ms to something less frequent and let us know what happens. Perhaps 5000 or 20000?