Dear Ekaterina,

Please note that you broke a bus route relation (https://www.openstreetmap.org/relation/4049118). iD does not show the relation, but validators (and JOSM) will display the route line as broken (i.e. the members of the relation should form one single unbroken line)

I must ask you and your team to take care of not breaking such relations when you're editing roundabouts.