mkaring/nifty-gui — comment on commit c52bc293c465567968b208e22b19aeeb19ae1d13
File:  line 0
By mkaring:

The droppable objects contain a #droppableContent - Panel that is supposed to store all the objects dropped into the droppable. How ever the code I altered keeps moving the dropped objects out of this content-panel that causes the layout to screw up.

I will look into the problem with the example... how ever this problem bases on the point that multiple objects are placed inside the droppable and they are by design not meant to hold multiple objects.