EF 4.1 loading filtered child collections not working for many-to-many

I've been looking at Applying filters when explicitly loading related entities and could not get it to work for a many-to-many relationship.

I created a simple model:

Brief description:
A Student can take many Courses and a Course can have many Students.
A Student can make many Presentation, but a Presentation can be made by only one Student.
So what we have is a many-to-many relationship between Students and Courses, as well as a one-to-many relationship between Student and Presentations.

I've also added one Student, one Course and one Presentation related to each other.

Here is the code I am running:

class Program
{
    static void Main()
    {
        using (var context = new SportsModelContainer())
        {
            context.Configuration.LazyLoadingEnabled = false;
            context.Configuration.ProxyCreationEnabled = false;

            Student student = context.Students.Find(1);

            context.
                Entry(student).
                Collection(s => s.Presentations).
                Query().
                Where(p => p.Id == 1).
                Load(); 

            context.
                Entry(student).
                Collection(s => s.Courses).
                Query().
                Where(c => c.Id == 1).
                Load();

            // Trying to run Load without calling Query() first
            context.Entry(student).Collection(s => s.Courses).Load();
        }
    }
}

After loading the presentations I see that the count fo