I've noticed an interesting issue with the dynamic generalization of feature services in ArcGIS Server/Portal. I can open my feature service in the Portal map viewer and as I zoom in incrementally using the mouse wheel the features resample and render nicely. However, if I click on a feature - say a point near a line - and choose 'zoom to feature' from the popup, the map will zoom but the line does not resample and rerender. Leaving the map looking incorrect at larger scales. Has anybody else seen this?