Oh, I see why you're confused. You are conflating two of my above comments. Clicking on the Date field and getting error is one thing. I was not able to replicate that, so may be moot. I'll watch for it and see if it happens again.
Now we're talking about how Status button works when no Event Date range is entered. Seems to me that it should do the same thing that the Day Status button does when the Day Start/End is outside the Event Date range.