Hi,

There is an bug in drawing a line chart both LTR and RTL mode.
index variable in this code not defined.

Code:
series.getLegendColor(index)
Code:
    drawLine: function(fromX, fromY, toX, toY, z, seriesStyle) {
        var me = this,
            surface = me.surface,
            series = me.series;
        
        return me.add('line', surface.add({
            type: 'path',
            path: 'M' + fromX + ',' + fromY + 'L' + toX + ',' + toY,
            zIndex: (z || 0) + 2,
            "stroke-width": series.lineWidth,
            "stroke-linejoin": "round",
            "stroke-dasharray": series.dash,
            stroke: seriesStyle.stroke || series.getLegendColor(index) || '#000',
            style: {
                cursor: 'pointer'
            }
        }));
    },
Regards