Incorrect cursor placement on the left of tooltip bar

Hi guys. First of all, fantastic library. But (_there is always but_) here is some bugs (?) which I found while developing app:

Black arrow represents cursor. Btw. Is there any way to print screen with cursor? ( :


1) Why cursor is not pointer but resize arrow?
2) Cursor isn't placed on grey vertical tooltip bar while mouse over, but padded 20 pixels (?) to the left. That way I cannot show first few points.

Is it my problem or is it library's problem?