Passing around reference of structure is invalidated
The problem is the lifetime of the Geometry object created for insertion in the map, i.e. this line:
map.insert({"geometry-id-1", {"id1", std::move(geometry)}});
The map stores only a reference to the object, but the object itself does not live after this line.
Replacing it with the following should make it work as you expected:
Geometry g = {"id1", std::move(geometry)};
map.insert({"geometry-id-1", g});