Chart created with POI not displayed properly in LibreOffice

Hi,
Not sure if I should post here or with the Apache POI but I’ll try here first because the file opens & displays fine in MS Excel and Excel Online.

I’m using the Apache POI to create a spreadsheet (xlsx), which LibreOffice has no issue opening and processing. When I add a chart, via POI, to the spreadsheet LibreOffice does not display it properly.

I am using LibreOffice 5.1.5.2

Image of Spreadsheet in Calc It should show a line chart, but doesn’t show any lines.

Download document here It’s about 6 kb

Any input is welcome.

Thank you

Chart opens with LibreOffice 5.2.0.4 x64. On windows 8.1. Chart outline does not show rounded corners and legend is overlapping the plot area, but the two series are displayed.