chart.js - Missing Tooltip for some data points using chartjs -

i have chart's has 200 data points plots correctly tool-tip doesn't appear last few data points. please refer jsbin link

thanks

this because points close hit raidus on lapping.

if add following property option graph should find points reachable, of course once graph gets small setting 1 not help

  pointhitdetectionradius:1 

http://jsbin.com/xiconuraqu/1/edit?html,js,output