I believe this is actually a bug presentation of the results in the Unity shell. Some quick debugging in HUD reveals that "enter" does, indeed, have the single, correct, result:
It seems like the Unity widget that presents the results doesn't always handle resizing to only having a single result. If you repeatedly switch between "ente" and "enter", you will see it sometimes showing no results, and sometimes showing a single result.
I believe this is actually a bug presentation of the results in the Unity shell. Some quick debugging in HUD reveals that "enter" does, indeed, have the single, correct, result:
QUERY = ("enter")
suggestion "<b>Enter</b> Location… (Go)"
It seems like the Unity widget that presents the results doesn't always handle resizing to only having a single result. If you repeatedly switch between "ente" and "enter", you will see it sometimes showing no results, and sometimes showing a single result.