Tooltip label is incorrect on Bar chart when min is defined

[Jareechang]

Expected Behavior

When min is defined, the first tooltip label should display the label at the minimum.

ex. when min is set to 'March', the tooltip should show 'March' as the label.

Current Behavior

currently, it displays data label two indexes down.

ex. when min is set to 'March', it displays 'May'.

Possible Solution

It seems the API slices the datasets into a subset when min or max is defined. Possible solution is to map the index of the parseVisibleItems method.

Steps to Reproduce (for bugs)

1. Chart type 'bar'
2. Set min on the chart
3. Hover over the first bar

Environment

• Chart.js version: 2.4.0

• Browser name and version: Google Chrome 54.0.2840.98

• Link to your project: https://jsfiddle.net/d29yoL8u/5

• Related to issue [BUG] Wrong category size of Bar with min ,max options. #3589 (discovered when trying to resolve this)

[Jareechang]

I am currently working on this one, @etimberg feel free to assign this to me.

[etimberg]

ok, sounds good @Jareechang

[KoyoSE]

#3620 and #3649 have fixed the same problem.
I tried the test below.

Build from the current latest code

https://jsfiddle.net/T_SAiTO/jw29rrnq/
Tool tip label of bar chart : NG
Tool tip label of horizontal bar chart : OK

Invalidated the change of #3620 from the above build.(only#3649)

https://jsfiddle.net/T_SAiTO/vogqedw1/
Tool tip label of bar chart : OK
Tool tip label of horizontal bar chart : OK

Invalidated the change of #3649 from the above build.(only#3620)

https://jsfiddle.net/T_SAiTO/mnL7wmfj/
Tool tip label of bar chart : OK
Tool tip label of horizontal bar chart : NG

Thank you for your consideration.

[etimberg]

Sounds like we need to revert the second change.