There are still ways to get the "stutter" effect while panning. I'm using a PostGIS layer and uDig 1.1 RC8.
Different way to pan provide different effects:
- drag, stop and release: ok
- drag and release without stopping: stutter, I see the old (pre drag) map reappear
- do the above twice as if you where scrolling with Acrobat with the "hand" tool: stutter + the second time the original map appears