Rectangle.Contains does not include right and bottom edges about core HOT 5 CLOSED

public bool Contains(int x, int y) => this.X <= x && x < this.Right && this.Y <= y && y < this.Bottom;

public bool Contains(int x, int y) => X <= x && x < X + Width && Y <= y && y < Y + Height;

        /// <summary>
        /// Gets the x-coordinate of the right edge of this <see cref="Rectangle"/>.
        /// </summary>
        public int Right
        {
            [MethodImpl(MethodImplOptions.AggressiveInlining)]
            get
            {
                return unchecked(this.X + this.Width);
            }
        }

        /// <summary>
        /// Gets the y-coordinate of the bottom edge of this <see cref="Rectangle"/>.
        /// </summary>
        public int Bottom
        {
            [MethodImpl(MethodImplOptions.AggressiveInlining)]
            get
            {
                return unchecked(this.Y + this.Height);
            }
        }