I haven’t been able to replicate this. Do you see it here in the XML below? What am I missing?

I hit this bug, and figured out how to fix it (I’m on 11.2.5, so it’s still pretty recent). 

I cloned a number of components at once, and converted the chart from a stacked bar to a pie chart. This cause this to be included in the XML:

stacking=“true”


Removing that in the XML manually fixes it.