javascript - How to change position of draggable element when dragging starts? -


jquery gets incorrect top position (correct 650) of draggable element , jumps down 902 after dragging starts. draggable element positioned absolute, parents static (with relative parents works has static). occurs when document height bigger window height. 

offset object { top=650, left=1265.25}  originalposition object { top=902, left=1265.25}  position object { top=902, left=1265.25}

is there way set proper position? help.


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