In ArcGIS Pro 2.5 charting symbology was introduced. It appears there is an error and data with small values do not show up in the pie chart. See the attached example. Below a certain threshold, the data disappears. I get at some small value, the slice of the pie chart would be difficult to see. However, why not make it difficult to see instead of misleading the viewer by having the data disappear altogether? The same data works in excel exactly as expected
You should report this as a bug to Tech Support. That is indeed misleading.
AND from 2018!
That should indeed be fixed since it isn't about aesthetics, it is about proper data representation!
Thanks for posting the bugs Dan! I also reported it as a bug with ESRI tech support. I figured adding it to this forum to increase awareness wouldn't hurt. Unfortunately, this same behavior existed in ArcMap and I was hoping they would fix it when developing charting functionality for Pro but I guess not.