stacked bar chart hover labels showing cumulative values since 1.20

[arhang]

hi.

stacked bar chart hover labels used to show individual values
since 1.20 they start showing cumulative ones
could this be reverted or could an option be added to choose what is shown?
thanks

[etpinard]

Thanks for posting.

@n-riesco looks like the fix in #1142 caused a regression.

[etpinard]

Reproducible example / comparison: http://codepen.io/etpinard/pen/Woopae