var settings = MongoClientSettings.FromUrl(new MongoUrl("mongodb://localhost:27017/?readPreference=primary&appname=MongoDB%20Compass%20Community&ssl=false"));
            var client = new MongoClient(settings);
            var database = client.GetDatabase("ZipDataSet");
            var collection = database.GetCollection<Zip>("Zips");            await collection.InsertManyAsync(new List<Zip>
            {
                new Zip
                {
                    ZipCode = 1,
                    Population=100,
                },
                new Zip
                {
                    ZipCode = 2,
                    Population=200,
                },
                new Zip
                {
                    ZipCode = 3,
                    Population=300,
                },
            });            

           //this is expected behavior
            var resultFind = await collection.Find(new BsonDocument()).Project(el => new { 
                DividedPopulation = el.Population / 23
            }).ToListAsync();

            //this is throw exception
            var resultProject = await collection.Aggregate().Project(el => new {
                DividedPopulation = el.Population / 23
            }).ToListAsync();

  Message: 
    System.FormatException : An error occurred while deserializing the DividedPopulation property of class <>f__AnonymousType0`1[[System.Int32, System.Private.CoreLib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=7cec85d7bea7798e]]: Truncation resulted in data loss.
    ---- MongoDB.Bson.TruncationException : Truncation resulted in data loss.
  Stack Trace: 
    BsonClassMapSerializer`1.DeserializeMemberValue(BsonDeserializationContext context, BsonMemberMap memberMap)
    BsonClassMapSerializer`1.DeserializeClass(BsonDeserializationContext context)
    BsonClassMapSerializer`1.Deserialize(BsonDeserializationContext context, BsonDeserializationArgs args)
    IBsonSerializerExtensions.Deserialize[TValue](IBsonSerializer`1 serializer, BsonDeserializationContext context)
    EnumerableSerializerBase`2.Deserialize(BsonDeserializationContext context, BsonDeserializationArgs args)
    IBsonSerializerExtensions.Deserialize[TValue](IBsonSerializer`1 serializer, BsonDeserializationContext context)
    CursorDeserializer.Deserialize(BsonDeserializationContext context, BsonDeserializationArgs args)
    IBsonSerializerExtensions.Deserialize[TValue](IBsonSerializer`1 serializer, BsonDeserializationContext context)
    AggregateResultDeserializer.Deserialize(BsonDeserializationContext context, BsonDeserializationArgs args)
    IBsonSerializerExtensions.Deserialize[TValue](IBsonSerializer`1 serializer, BsonDeserializationContext context)
    CommandUsingCommandMessageWireProtocol`1.ProcessResponse(ConnectionId connectionId, CommandMessage responseMessage)
    CommandUsingCommandMessageWireProtocol`1.ExecuteAsync(IConnection connection, CancellationToken cancellationToken)
    ServerChannel.ExecuteProtocolAsync[TResult](IWireProtocol`1 protocol, ICoreSession session, CancellationToken cancellationToken)
    RetryableReadOperationExecutor.ExecuteAsync[TResult](IRetryableReadOperation`1 operation, RetryableReadContext context, CancellationToken cancellationToken)
    ReadCommandOperation`1.ExecuteAsync(RetryableReadContext context, CancellationToken cancellationToken)
    AggregateOperation`1.ExecuteAsync(RetryableReadContext context, CancellationToken cancellationToken)
    AggregateOperation`1.ExecuteAsync(IReadBinding binding, CancellationToken cancellationToken)
    OperationExecutor.ExecuteReadOperationAsync[TResult](IReadBinding binding, IReadOperation`1 operation, CancellationToken cancellationToken)
    MongoCollectionImpl`1.ExecuteReadOperationAsync[TResult](IClientSessionHandle session, IReadOperation`1 operation, ReadPreference readPreference, CancellationToken cancellationToken)
    MongoCollectionImpl`1.AggregateAsync[TResult](IClientSessionHandle session, PipelineDefinition`2 pipeline, AggregateOptions options, CancellationToken cancellationToken)
    MongoCollectionImpl`1.UsingImplicitSessionAsync[TResult](Func`2 funcAsync, CancellationToken cancellationToken)
    IAsyncCursorSourceExtensions.ToListAsync[TDocument](IAsyncCursorSource`1 source, CancellationToken cancellationToken)
    StatisticsEventRepository.SuperCustomLogicHere() line 81
    MongoRepositoryTests.DoNothing() line 27
    --- End of stack trace from previous location where exception was thrown ---
    ----- Inner Stack Trace -----
    RepresentationConverter.ToInt32(Double value)
    Int32Serializer.Deserialize(BsonDeserializationContext context, BsonDeserializationArgs args)
    IBsonSerializer.Deserialize(BsonDeserializationContext context, BsonDeserializationArgs args)
    IBsonSerializerExtensions.Deserialize(IBsonSerializer serializer, BsonDeserializationContext context)
    BsonClassMapSerializer`1.DeserializeMemberValue(BsonDeserializationContext context, BsonMemberMap memberMap)