Spiderweb chart with circular gridline interpolation: Label is seen very far away from Plotline

[tanmayshah95]

Expected behaviour

Label should be displayed near plotline by default, same as in chart with polygon gridline interpolation (Refer demo).

Actual behaviour

In chart with circular interpolation, Label is seen very far away (on top left corner) from plotline by default.

Live demo with steps to reproduce

Use circle as gridline interpolation in spiderweb, create plotline at specific value with label. By default label will be displayed far away from plotline.

Spiderweb chart with Circular Interpolation.
http://jsfiddle.net/2862pqma/5/

Spiderweb chart with Polygon interpolation
http://jsfiddle.net/2862pqma/6/

Affected browser(s)
Chrome

for Reference:
https://stackoverflow.com/questions/45978487/spiderweb-chart-with-circular-gridline-interpolation-label-is-seen-very-far-awa