Collection of model objects doesn't eager load relationships

[LaravelFreelancerNL]

When opne object of a model is retrieved with a relationship, eager loading works fine.
However when multiple objects are retrieved the relationship collection is set, but empty.

    $location = Location::with('inhabitants')->find('winterfell');

vs

    $locations = Location::with('inhabitants')->get();

      #relations: array:1 [
        "inhabitants" => Illuminate\Database\Eloquent\Collection {#2940 ▼
          #items: []
          #escapeWhenCastingToString: false
        }
      ]

This happens with a HasMany relationship, but not BelongsTo. Other relationships need to be checked.