Drivers window, won't hold down while closing
 

2004 Boxster S
when you pull the door handle inside or out the window drops slightly as it is intended but does not hold in that position. as soon as you let go of either handle it immediately raises causing an issue closing the door. Looking for advise as to what causes this and or how to repair.

When operating properly, it stays down when closing the door and goes up when door is closed.