The AttributeLabelClass properties does not honor the 'TextSymbol', 'XOffset', and, 'YOffset' properties using the Desktop API application.
Last Published: December 16, 2014ArcGIS Runtime SDK
Bug ID Number
December 2, 2014
June 20, 2022
ArcGIS Runtime SDK
After review by the development team, it has been determined that this issue is related to a known limitation with the software that lies outside of Esri's control. The issue's Additional Information section may contain further explanation.
These properties on the 'TextSymbol' are not supported when the 'TextSymbols' are used for labeling. Added to doc.