Thank you for reply hubert.k
Now, in your demo link, stack labels are moving slight up , so i adjusted labelSpacing = "-30px" and for some bar labels are moving right side in UI (Highlighted in UI image file). When we download image we observe Labels are moving in right side of bar in downloaded PNG file. (Which is happening in our existing application , we are trying to adjust x value for stacklabel and rightSpacing inside formatter function)
Demo :
https://jsfiddle.net/nilesh_nagdeve007/4u8ptgnx/1/
Kindly go through the attachment for UI Image and Download file