How can I scroll seamlessly with scrollbar beyond data range ?

I am tryng to use ScichartScrollbar,and in trouble.

When view port range is beyond data binded with scrollbar and center of the scrollbar is clicked,data jumps horizontally.
please refer to the Picture below.
I used official sample program named SciChart_PerAxisScrollbar in the picture.
How can I stop this and scroll seamlessly?

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