App Has Period?

I have never seen anything like this. When I add a child record to my main form, the Birthdate field loads with a period in the input box. I have no idea how this is happening. Has anyone in this community seen anything like this? What could be causing it? I promise this is NOT a spoof or joke.

HTML
<input name="Birthdate" class="form-control input-sm" data-bind="attr:{'id': 'Birthdate_' + $index()}, value: Birthdate, date: Birthdate, format: 'MM DD YYYY', event: {change: flagIndividualsAsEdited}" placeholder="Birthdate"/>
                        </td>

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JS function adding child viewModel and defaults.
        self.addFamilyMember = function() {
            var individuals = new IndividualsViewModel({ Id: -1, FirstName: "", MiddleName: "", LastName: "", Gender: "", PhoneNumber: "0000000000", Email: "", Birthdate: "", AdultBirthdateDecline: 0, Ethnicity: "", USTANumber: "", FamilyRole: "", RelationshipType: "", ObjectState: ObjectState.Added });
            self.Individuals.push(individuals);
        },

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THE DEMON PERIOD!
Input form with random period in Birthdate field.
wdarnellgAsked:
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Steve BinkConnect With a Mentor Commented:
That's not a period...that's a hyphen.  It looks like you are using a library to enforce a particular formatting on the value of that input box (date formatting, probably).  The hyphen could be an artifact of the library trying to format a NULL value into a date.  Or perhaps the library properly detects the NULL value, and purposefully inserts the hyphen to signify it.

In any case, you'll need to look through the library manipulating that input.
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wdarnellgAuthor Commented:
That was it. It was this part code that formats the date:
       var value = valueAccessor();
            var pattern = allBindings.format || "MM/DD/YYYY";
            var valueUnwrapped = ko.utils.unwrapObservable(value);

            var output = "-";
            if (valueUnwrapped !== null && valueUnwrapped !== undefined && valueUnwrapped.length > 0) {
                output = moment(valueUnwrapped).format(pattern);
            }
            if ($(element).is("input") === true) {

                $(element).val(output);
            } else {
                $(element).text(output);
            }

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Thanks for the insight!
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