When using the search widget and adding a locator source the sources property. The singleLineFieldName is not taken into account when requesting a suggest (which is happening when typing). I can see that the requested url uses text as a search key opposed to the value in singleLineFieldName. The search however uses the correct key.
This results in too few results showing up in the suggest box.
Someone has a workaround for this? Maybe a way to alter the request before it is sent to the geocode server.