Yeah, its odd. I too re-added a new autosuggest on the same screen and the 2nd one worked. I'm guessing that it depends on how the items were added to the screen etc. If I can reproduce it, I'll track the steps.

The Autosuggest "suggestionlist" doesn't appear to show up "on top" of other controls. e.g. I have a tab section just below my autosuggest, and when I view in the web browser, it appears "under" the tab section. - Otherwise awesome tool!