Table Attribute is being ignored

I've got a table and class name User, which is a keyword in SQL, so as per DapperLib/Dapper#398 I have used the table attribute as follows:

[Table("[User]")] 
public class User : IUser<int>  
{
  public int Id { get; set; }
  public string UserName { get; set; }
  public bool EmailConfirmed { get; set; }
  public string PasswordHash { get; set; }
  public DateTime? LockoutEndDateUtc { get; set; }
  public bool LockoutEnabled { get; set; }
  public int AccessFailedCount { get; set; }
}

And I'm attempting to insert records like so:

public async Task CreateAsync(User user)
{
  using (var connection = GetConnection())
  {
    await connection.InsertAsync(user);
  }
}

If it matters, this is for a Dapper implementation of the backend of ASP.NET Identity.

However, I'm seeing in SQL Server Profiler that I'm writing the SQL the bare "User" instead of my specified "[User]". Upon closer inspection, it seems SqlMapperExtensions.GetTableName(Type type) is the culprit, since it early returns if the type handle's name is available.

Am I missing something here?

Start by inspecting SqlMapperExtensions.GetTableName(Type type), which the report identifies as returning the type name before honoring the [Table] attribute. Reproduce the insert with the shown User model and verify that the generated SQL uses the configured [User] table name rather than the bare type name.