100% stacked area chart - Detail label formatting options 'missing'

HI  D_M 

I checked the previous version, about the stacked area chart visual, in the previous version data lable=>detail there is no 'Bold', 'Italic' and 'Underline' inside . 

Can you find which version has this feature? If it can be proven that this previous visual had this feature, then I can submit the issue and have them fix it.

If the stacked area chart doesn't have this feature to begin with, you can vote the idea and comment there to improve this feature. It is a place for customers provide feedback about Microsoft Office products . What’s more, if a feedback is high voted there by other customers, it will be promising that Microsoft Product Team will take it into consideration when designing the next version in the future. 

Thank you for your cooperation!

Best Regards,
Community Support Team _ Ailsa Tao