A map service image layer containing a mosaic dataset published from ArcGIS Pro to ArcGIS Enterprise does not display the pixel values when using the Explore tool on the Map view in ArcGIS Pro, whereas when the same workflow is performed in ArcMap, the map service layer displays the pixel values.
This issue is not reproducible. A mosaic dataset cannot be shared as a map Image layer or map service without the Image Analyst extension, where pixels are identifiable with the Explore tool. Contact Esri Support Services if experiencing an equivalancy issue in ArcGIS Pro.
解决办法
Publish the map service which references the mosaic dataset from ArcMap.