Cannot use $count with ODataRoute Attribute

Using the ODataRoute atrribute makes the $count not work.

/// Startup.cs
app.UseOData("odata", "odata", GetEdmModel());

static GetEdmModel()
{
    ODataConventionModelBuilder builder = new ODataConventionModelBuilder();
    builder.EntitySet<User>("User");
    builder.EntitySet<User>("Product");
    return builder.GetEdmModel();
}

/// MyController.cs
[EnableQuery]
[ODataRoute("User")]
public IQueryable<User> GetUser() => User.GetQuery());

[EnableQuery]
[ODataRoute("Product")]
public IQueryable<Product> GetProduct() => Product.GetQuery());

http://localhost:5901/odata/User (Works)
http://localhost:5901/odata/User/$count (Not Working)

Start with the OData setup in Startup.cs and the ODataRoute actions in MyController.cs. Run the listed /odata/User and /odata/User/$count requests to reproduce the discrepancy, then verify that the $count endpoint works while retaining the attribute-based routes.