The generated KMZ file of a polygon layer using the Map To KML tool in ArcGIS Pro produces a slight offset in the data display in comparison to the input layer.
The offset is due to a missing Geographic Transformation from the source datasets to WGS84, which is how KML features are stored. The bug is resolved in ArcGIS Pro 3.2, as the Geographic Transformation environment can be applied and the offset no longer exists.