Word-Export: Zero-Line in bar chart diagram

I suggest to implement the following feature:

The PDF export and the WORD export differ the case of displaying a line for bars with the value zero. The PDF export displays a line and the word export do not. Please implement the displaying of the line for bars with value zero to the WORD export as well.

A typical use case might be:

If we export a WORD and the colors of the bars are similar it is not really possible to recognize which of the entries in the legend is linked to which bar. Therefore it would be nice if the lines for bars with the value zero would be displayed in the WORD export as well