Forwarding anonymous report from #Mapy.cz user, please verify: Blue marked hiking route has been changed (https://www.openstreetmap.org/relation/10013229).
This is a new part of it:
https://www.openstreetmap.org/directions?engine=graphhopper_foot&route=54.7532%2C17.6116%3B54.7517%2C17.5879#map=15/54.7533/17.6050