JFreeChart 1.0.17 displays wrong legend, whereas the legend was correct with version 1.0.10.
In a chart with 6 series [called with plot.setRenderer(a) for the first series and plot.setRenderer(1, b); ... plot.setRenderer(5, f)], the legends displayed are wrong:
Should be: a, b, c, d, e, f
But is: a, b, c, d, c, b
This did not happen with 1.0.10.
I've got a self-contained test-case, but it is quite complicated and closed source, thus I cannot attach it to this bug.