When line tension is 0, line does not animate in #2647
Description
https://jsfiddle.net/6rd9aLb1/2/
comment out the tension, rerun the fiddle, and the graph animates in:
// Chart.defaults.global.elements.line.tension = 0;
uncomment the tension, rerun, and the line does not animate in:
Chart.defaults.global.elements.line.tension = 0;