duplicate column in show data

Hi experts,

I face strange issue here, as seen following, the 'Show Data' table has 2 fields appear twice and the data under title are incorrect. The chart is correct and the issue does not happen with Power BI Desktop, though. It does happen to app.powerbi.com only. 

Is there any one came acorss this kind of issue and know how to fix it?

Thank you,

Daniel