Duplicate of BUG-000111339: Changing the legend title to match the field name will remove behavior that most users of this tool are counting on. e.g. Local street name fields vary broadly, but the legend title for our national map is what we want to display; or, vise versa.
The second part of your bug is being addressed by another issue and we will be working on it in the near term. (this release or the next)
解决办法
Navigate to the counties symbology.
Change the field value from ‘State_Name2’ to STATE_NAME and back to ‘State_Name2’.
This refreshes the Contents pane and the attribute value and symbology is displayed correctly.