Priority not persisted after enqueuing

[daleao]

I'm using a SimplePriorityQueue<TItem, TPriority>, where TItem : GenericPriorityQueueNode<TPriority> and TPriority : IComparable<TPriority>; i.e., my Node class is derived from GenericPriorityQueueNode and uses a custom struct as the priority.

The prioritization seems to work correctly. But immediately after calling .Enqueue(item, priority), the Priority property of the queued item iis set to the default value, instead of the value priority which was passed to Enqueue.

Have I misunderstood how to use these objects? I'm implementing D* and was hoping to get the Key value from the Priority property.

Minimal working example (included the whole Key struct in case it's important):

public readonly struct Key(float k1, float k2) : IComparable<Key>
{
    public readonly float K1 = k1;
    public readonly float K2 = k2;

    public static bool operator <(Key left, Key right) => left.K1 < right.K1 || (left.K1 == right.K1 && left.K2 < right.K2);
    public static bool operator >(Key left, Key right) => left.K1 > right.K1 || (left.K1 == right.K1 && left.K2 > right.K2);
    public static bool operator ==(Key left, Key right) => left.K1 == right.K1 && left.K2 == right.K2;
    public static bool operator !=(Key left, Key right) => !(left == right);

    public int CompareTo(Key other)
    {
        return this < other ? -1 : this > other ? 1 : 0;
    }

    public override bool Equals(object? @object)
    {
        return @object is Key key && this == key;
    }

    public override int GetHashCode()
    {
        return HashCode.Combine(this.K1, this.K2);
    }

    public override string ToString()
    {
        return $"{this.K1}, {this.K2}";
    }
}

public sealed class Node : GenericPriorityQueueNode<Key>
{
    public Node() { }
}

class Program
{
    static void Main()
    {
        var queue = new SimplePriorityQueue<Node, Key>();
        queue.Enqueue(new Node(), new Key(1, 1));
        // inspect the queue here and notice that item 0 has Priority = Key {0, 0};
    }
}