[BUG] (vertical) stacked bar is created without respecting ticks.min setting

[cizmiak]

Expected Behavior

When stacked yAxis.ticks.min is set chart should also be cut by this horizontal line like line chart type is.

Current Behavior

Whole value of bar is added to yAxis.ticks.min so that resulting bar has value = barDataValue + yAxis.ticks.min.

Possible Solution

Silly workaround is to substract data values with minimum value, hide yAxis for dataset and display results with dummy yAxis with properly ticks.min and max set:
https://jsfiddle.net/24aotbnc/20/

Steps to Reproduce (for bugs)

https://jsfiddle.net/24aotbnc/19/

1. dataset.type = 'bar'
2. dataset.data = set some data
3. yAxis.stacked = true
4. yAxis.ticks.min = minimum

Context

Imagine you have stacked bars, bottom bars are bad(red) and top bars are good(green). All bottom red bars have value 80. All top green bars have vallue between 0 and 20. So may be you want to focus on values between 70 and 100.

Environment

• Chart.js version: 2.5

[etimberg]

@cizmiak thanks for reporting this. We actually noticed this too. It got fixed in #4010