Geospatial queries on collections don't seem to work

[sync-by-unito]

We have the following model:

public partial class Company : IRealmObject
{
    public string Name { get; set; }

    public IList<CustomGeoPoint> Offices { get; }
}

public partial class CustomGeoPoint : IEmbeddedObject
{
    public IList<double> coordinates { get; }

    public string type { get; set; } = "Point";
}

And the following data:

[{ "Name":"1,2",
    "Offices":[{
        "type":"Point",
        "coordinates":[ 1.0, 1.0 ]
    }, {
        "type":"Point",
        "coordinates":[ 2.0, 2.0 ]
    }]
}, { 
    "Name":"2,3",
    "Offices":[{
        "type":"Point",
        "coordinates":[ 2.0, 2.0 ]
    }, {
        "type":"Point",
        "coordinates":[ 3.0, 3.0 ]
    }]
}]

Then, this query doesn't return any results, even though I would expect it to match the first company:

Offices GEOWITHIN GeoSphere([1, 1], 0.00872665)