How to display correctly lines, polygons on the OSM map?

Question

OpenStreetMap

Good afternoon, dear experts, perhaps the solution to this issue is very simple for you, if you have such knowledge, I ask you to tell me how to correctly display the lines, polygons on the map. Map by OSM, using LeafletJS. The map itself The

site on which I draw the road and export the coordinates to geojson, the result: point markers are set as they should.