Json converter is ignored when reading from jsonb column

[elementum]

I'm having a problem similar to #2325

I have a jsonb column that stores an object with enum property. I configured all enums to serialize as strings. However even though It is written as string it is still read as number that results in error.

Here is a console app that reproduces the problem:

using System.Text.Json.Serialization;
using Microsoft.EntityFrameworkCore;
using Npgsql;

using var db = new MyContext();
db.Database.EnsureCreated();

var user = new User()
{
    Details = new()
    {
        Address = "some address",
        UserType = UserType.Admin
    }
};

db.Users.Add(user);
db.SaveChanges(); // saved successfully {"Address": "some address", "UserType": "Admin"}

user = db.Users.FirstOrDefault(); // read whole user successfully

var userType = db.Users.Select(x => x.Details.UserType).FirstOrDefault(); // fails  22P02: invalid input syntax for type integer: "Admin"
Console.WriteLine(userType);

class MyContext : DbContext
{
    public DbSet<User> Users { get; set; } = null!;

    protected override void OnConfiguring(DbContextOptionsBuilder optionsBuilder)
    {
        var dataSource = new NpgsqlDataSourceBuilder("Host=localhost;Port=5432;Database=any;Username=any;Password=any")
            .EnableDynamicJson()
            .ConfigureJsonOptions(new()
            {
                PropertyNameCaseInsensitive = true,
                Converters =
                {
                    new JsonStringEnumConverter(allowIntegerValues: true),
                },
            })
            .Build();
        
        optionsBuilder.UseNpgsql(dataSource);
    }

    protected override void OnModelCreating(ModelBuilder modelBuilder)
    {
        modelBuilder.Entity<User>(o =>
        {
            o.Property(p => p.Details).HasColumnType("jsonb");
        });
    }
}

record User
{
    public long Id { get; set; }
    public UserDetails Details { get; set; }
}
record UserDetails
{
    public string Address { get; set; }
    public UserType UserType { get; set; }
}

enum UserType
{
    Manager = 1,
    Admin = 2
}