Commented Issue: Issue while reading xSeries of excel chart [13128]

The excel file was created in office 2010, but the value of xSeries cannot be read correctly(empty) through EPPlus. Here is the inner xml for ExcelChartSerie:
<c:grouping val="standard" xmlns:c="http://schemas.openxmlformats.org/drawingml/2006/chart" />
<c:varyColors val="0" xmlns:c="http://schemas.openxmlformats.org/drawingml/2006/chart" />
<c:ser xmlns:c="http://schemas.openxmlformats.org/drawingml/2006/chart">
<c:idx val="0" />
<c:order val="0" />
<c:marker>
<c:symbol val="none" />
</c:marker>
<c:cat>
<c:strRef>
<c:f>Sheet1!$B$2</c:f>
<c:strCache>
<c:ptCount val="1" />
<c:pt idx="0">
<c:v>$$student.Age</c:v>
</c:pt>
</c:strCache>
</c:strRef>
</c:cat>
<c:val>
<c:numRef>
<c:f>Sheet1!$F$2</c:f>
<c:numCache>
<c:formatCode>"¥"#,##0.00_);[Red]\("¥"#,##0.00\)</c:formatCode>
<c:ptCount val="1" />
<c:pt idx="0">
<c:v>0</c:v>
</c:pt>
</c:numCache>
</c:numRef>
</c:val>
<c:smooth val="0" />
</c:ser>
<c:dLbls xmlns:c="http://schemas.openxmlformats.org/drawingml/2006/chart">
<c:showLegendKey val="0" />
<c:showVal val="0" />
<c:showCatName val="0" />
<c:showSerName val="0" />
<c:showPercent val="0" />
<c:showBubbleSize val="0" />
</c:dLbls>
<c:marker val="1" xmlns:c="http://schemas.openxmlformats.org/drawingml/2006/chart" />
<c:smooth val="0" xmlns:c="http://schemas.openxmlformats.org/drawingml/2006/chart" />
<c:axId val="25110784" xmlns:c="http://schemas.openxmlformats.org/drawingml/2006/chart" />
<c:axId val="43503616" xmlns:c="http://schemas.openxmlformats.org/drawingml/2006/chart" />

And later I found the issue is in the constructor of ExcelChartSerie. The private field _xSeriesPath should be assigned with "{0}/c:strRef/c:f" instead of "{0}/c:numRef/c:f".
Comments: This problem still exists. Any idea on when it would be fixed?