When dragging to scroll on a Pane's drag handle or in a free-scrolling field such as a zoomed-in image or WebView, the content doesn't actually move until the cursor has left a predefined drag radius. It makes the scrolling seem jerky.
I've noticed this on both Touchpad apps (Browser, Email, Maps, etc.) and in the Enyo 1.0 UI Example on enyojs.com. Noted that this version is no longer in active development, but I wanted to raise awareness and hopefully avoid the same issue popping up in the Enyo 2.0 UI Widgets.