I will always stick to the center (relative to the mouse)

My cursor is at left -5 and top -5

My cursor position is only controlled for the 'bottom' value

Position the cursor while dragging the object. By default the cursor appears in the center of the dragged object; use the cursorAt option to specify another location relative to the draggable (specify a pixel value from the top, right, bottom, and/or left). Customize the cursor's appearance by supplying the cursor option with a valid CSS cursor value: default, move, pointer, crosshair, etc.