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Sencha Premium Member
Faulty assert in BarSeries.java disalows the inclusion of negative values on chart
First image: tooltip works for positive values.
Second image: tooltip does not work. Value represented by bar is hard to visualize due to the fact that the numeric axis does not show negative values.
Third image: assert statement eliminates the ability to shift the minY value of the numeric axis to include negative values
Edit: pardon the misspelling of "disallows" in the title.
The assert was added because mixing of positive and negative values in bar series are not supported as of the 3.0 release. However, this is a planned feature in a future release.