I'm having the same problem described in this post just with charts instead of tables. I've set my (double) numeric field to 3 decimal places in the webmap but for some reason, some, but not all of the values in the chart are massively long.
This looks bad visually to users and is confusing, particularly because none of the values in my data have that many decimals. I tried making a new field with all values being exactly 3 decimal places long but this still happens.
My work around currently is to set the character limit on the corresponding axis, which results in truncating the long decimals, but it is replaced with an ellipse. This does look better visually but can still be confusing for people.
Does anyone know how to resolve this?
Edit Never mind, I thought you were trying to do this in Pro, not experience builder
You have seen this link?
Change chart appearance—ArcGIS Pro | Documentation
it is supposed to allow for setting axis and data labels etc
Thanks Dan - I'm using the data label settings in my work around to limit the character limit displayed in the x axis values, but it doesn't resolve why some of value labels have 15 decimals and the rest honor my setting of 3 in the webmap. (unless I'm misunderstanding something).