QueryMultiple: Error parsing column

When using QueryMultiple against an OracleConnection with the following query:

IEnumerable<PhoneNumber> results;
using (var conn = new OracleConnection(_connStr))
{
    var cmdText = @"BEGIN
    OPEN :q9 FOR
        SELECT d.veh_type_nm
        FROM v_dim_veh_type d
        INNER JOIN provider_veh_type p
            ON p.key_veh_type = d.id
        WHERE p.provider_id = :providerId
        AND d.locale_cd = :localeCode;
    OPEN :q1 FOR
        SELECT p.provider_id AS ProviderId,
        d.phone_type_nm AS PhoneType,
        p.phone_nbr AS FormattedNumber
        FROM provider_phone p
        INNER JOIN v_dim_phone_type d
        ON d.id = p.key_phone_type
        WHERE p.provider_id = :providerId
        AND d.locale_cd = :localeCode;
    END;";
    var dynParams = new OracleDynamicParameters();
    dynParams.Add(":q9", OracleDbType.RefCursor, ParameterDirection.Output);
    dynParams.Add(":q1", OracleDbType.RefCursor, ParameterDirection.Output);
    dynParams.Add(":providerId", OracleDbType.Int32, ParameterDirection.Input, providerId);
    dynParams.Add(":localeCode", OracleDbType.Varchar2, ParameterDirection.Input, _localeCode);
    using (var multi = conn.QueryMultiple(cmdText, dynParams))
    {
        var x = multi.Read<string>();
        results = multi.Read<PhoneNumber>();
    }

... I see the following exception:

System.Data.DataException was unhandled by user code
  HResult=-2146233087
  Message=Error parsing column 1 (PHONETYPE=1 - Decimal)
  Source=Dapper
  StackTrace:
       at Dapper.SqlMapper.ThrowDataException(Exception ex, Int32 index, IDataReader reader, Object value)
       at Deserialized8c24a26-e123-4377-9b7a-54760268d46a(IDataReader )
       at Dapper.SqlMapper.GridReader.<ReadDeferred>d__52`1.MoveNext()
       at System.Collections.Generic.List`1..ctor(IEnumerable`1 collection)
       at System.Linq.Enumerable.ToList[TSource](IEnumerable`1 source)
       at Dapper.SqlMapper.GridReader.ReadImpl[T](Type type, Boolean buffered)
       at Dapper.SqlMapper.GridReader.Read[T](Boolean buffered)
       at FindARide.Models.FindARideRepository.GetPhoneNumbers(Int32 providerId) in D:\Projects\Find-A-Ride\src\FindARide\Models\FindARideRepository.cs:line 109
       at FindARide.Controllers.ProviderController.GetProviderPhoneNumbers(Int32 id, String locale) in D:\Projects\Find-A-Ride\src\FindARide\Controllers\ProviderController.cs:line 38
       at lambda_method(Closure , Object , Object[] )
       at Microsoft.AspNetCore.Mvc.Internal.ObjectMethodExecutor.Execute(Object target, Object[] parameters)
       at Microsoft.AspNetCore.Mvc.Internal.ControllerActionInvoker.<InvokeActionFilterAsync>d__28.MoveNext()
  InnerException: 
       HResult=-2146233080
       Message=Index was outside the bounds of the array.
       Source=Oracle.ManagedDataAccess
       StackTrace:
            at Oracle.ManagedDataAccess.Client.OracleDataReader.GetValue(Int32 i)
            at Oracle.ManagedDataAccess.Client.OracleDataReader.get_Item(Int32 i)
            at Deserialized8c24a26-e123-4377-9b7a-54760268d46a(IDataReader )
       InnerException: 

If I reverse the order of the queries, I have no issue:

IEnumerable<PhoneNumber> results;
using (var conn = new OracleConnection(_connStr))
{
    var cmdText = @"BEGIN
    OPEN :q1 FOR
        SELECT p.provider_id AS ProviderId,
        d.phone_type_nm AS PhoneType,
        p.phone_nbr AS FormattedNumber
        FROM provider_phone p
        INNER JOIN v_dim_phone_type d
        ON d.id = p.key_phone_type
        WHERE p.provider_id = :providerId
        AND d.locale_cd = :localeCode;
    OPEN :q9 FOR
        SELECT d.veh_type_nm
        FROM v_dim_veh_type d
        INNER JOIN provider_veh_type p
            ON p.key_veh_type = d.id
        WHERE p.provider_id = :providerId
        AND d.locale_cd = :localeCode;
    END;";
    var dynParams = new OracleDynamicParameters();
    dynParams.Add(":q1", OracleDbType.RefCursor, ParameterDirection.Output);
    dynParams.Add(":q9", OracleDbType.RefCursor, ParameterDirection.Output);
    dynParams.Add(":providerId", OracleDbType.Int32, ParameterDirection.Input, providerId);
    dynParams.Add(":localeCode", OracleDbType.Varchar2, ParameterDirection.Input, _localeCode);
    using (var multi = conn.QueryMultiple(cmdText, dynParams))
    {
        results = multi.Read<PhoneNumber>();
        var x = multi.Read<string>();
    }

Happy to provide more info as needed.

Start by reproducing the OracleConnection case from FindARideRepository.cs around line 109, using QueryMultiple and GridReader.Read in the shown order. Inspect the OracleDataReader failure and Dapper's multi-result handling to identify which result metadata is mismatched. Done means the supplied query order no longer raises the parsing exception, with regression coverage if an existing test entry point is found.