Points outside extremes are visible when boost.js is used

[Izothep]

Expected behaviour

Points that are outside yAxis extremes should not be visible.

Example without boost.js:
http://jsfiddle.net/vd1y2cjx/4/

Actual behaviour

Points are visible even when they are outside the axis extremes. Also, the tooltip is not working for this points.

Live demo

http://jsfiddle.net/vd1y2cjx/5/

[pawelfus]

Fixed since v7.1, demo: http://jsfiddle.net/BlackLabel/6yf0rnpv/1/