A chart copied from Excel to Word displays wrong when export as PDF

When I manually copy a chart from Excel and paste on a word file, it looks good, but after I save this word file as PDF, the chart in PDF is crashed. Some extra texts appears in Y axis and some extra lines appears in Y axis.
Please see the this example files pdf-chart-issues.zip (40.3 KB)

@jackth,

We have logged this problem in our issue tracking system with ID WORDSNET-22022. We will further look into the details of this problem and will keep you updated on the status of correction. We apologize for your inconvenience.