InvalidCastException for Future Criteria with aliased fetches

[skitsur-dev]

First of all, thank you for an awesome ORM. I've been using NHibernate for a couple of years now, awesome stuff.

I just tried to update from Nhibernate 5.2.7 to 5.3.0 when I noticed a behavior change when running all our unittests. It seems to happen if you use future in combination with fetch and join. I've read thru the release notes and I can't seem to find anything about this.

    [Test]
    public void Cannot_use_future_with_fetch_and_join()
    {
        //Works in NH 5.2.7, not in NH 5.3.

        Anstallning aAlias = null; //Employee
        Anstallningsperiod apAlias = null; //Employee period

        var query = Session.QueryOver(() => aAlias)
            .JoinQueryOver(() => aAlias.Anstallningsperioder, () => apAlias)
            .Fetch(SelectMode.Fetch, () => aAlias.TidgruppDateRanges)
            .Future<Anstallning>();


        var execute = query.ToList(); //Throws System.InvalidCastException : unable to cast object of type Flex.Net.Domain.Entities.Anstallning to type System.Object[].

        /*
            Stacktrace:
           --InvalidCastException
           at NHibernate.Cache.QueryCacheResultBuilder.AddRow(Object result, Object[] entities, IPersistentCollection[] collections)
           at NHibernate.Loader.Loader.GetRowFromResultSet(DbDataReader resultSet, ISessionImplementor session, QueryParameters queryParameters, LockMode[] lockModeArray, 
                                                            EntityKey optionalObjectKey, IList hydratedObjects, EntityKey[] keys, Boolean returnProxies, IResultTransformer forcedResultTransformer, 
                                                            QueryCacheResultBuilder queryCacheResultBuilder, Action`2 cacheBatchingHandler)
           at NHibernate.Multi.QueryBatchItemBase`1.ProcessResultsSet(DbDataReader reader)
           at NHibernate.Multi.QueryBatch.ExecuteBatched()
         */

        Assert.That(execute.Count, Is.EqualTo(1));
    }

if needed I can provide a minimal example application but I think the test above will be sufficent.

Thanks in advance!

[hazzik]

Fixed by #2444

[bahusoid]

Until 5.3.1 is released you can use pre-release version https://www.myget.org/feed/nhibernate/package/nuget/NHibernate/5.3.1-dev.3007
(more info here)