Routing inconsistency

Hi Team,

I have a simple controller - using Odata8.0.8 in .Net6

public class StudentsController : BaseExternalController
    {
        [HttpGet("Students/{key}/GetStudentGrades")]
        public async Task<IActionResult> GetStudentGrades(string key)
        {
            business logic...

            return Ok(grades);
        }
    }

I defined the method in my EDM:

    var student= builder.EntitySet<Student>("students").EntityType;
    student.HasKey(student => student.Id);

    builder.AddComplexType(typeof(Grades)).Namespace = builder.Namespace;
    var assets = student.Action(nameof(StudentsController.GetStudentGrades)).ReturnsCollection<Grades>();
    assets.Namespace = builder.Namespace;

when trying to call the api/students/someId/GetStudentGrades I can't reach the endpoint (api is the Odata route prefix when constructing the route template.)

Important notes:

• changing only the http method attribute from

       [HttpGet("Students/{key}/GetStudentGrades")]

to

        [HttpPost("Students/{key}/GetStudentGrades")] 

will solve the issue (will reach the endpoint as expected.)

• The AspNetCore routing Works, Calling the method directly without the Odata prefix reaches the controller (api/students/someId/GetStudentGrades)

• The same EDM / controller structure worked in OData in .net Framework 4.7.2 with Microsoft.AspNet.OData.7.5.12