| @johnlk: It doesn't any more! But it will have happened because a blank answer was accidentally included in the alternatives. Some short words like `the' are automatically stripped from answers before they're checked, so `the' gets converted to a blank, which matched the accidental blank answer. By default, answers are only checked if they have at least three letters, so you didn't get the blank answer until you'd typed something. (Three spaces would also have worked.) |
