diff --git a/frontend/src/utils/form/datepicker.js b/frontend/src/utils/form/datepicker.js
index 2a32f5a99..11d7394bc 100644
--- a/frontend/src/utils/form/datepicker.js
+++ b/frontend/src/utils/form/datepicker.js
@@ -26,21 +26,25 @@ const FORM_DATE_FORMAT_MOMENT = {
 
 /**
  * Takes a string representation of a date and a format string and parses the given date to a Date object.
+ * If the date string is not valid (i.e. cannot be parsed with the given format string), returns undefined.
  * @param {*} dateStr string representation of a date
  * @param {*} dateFormat format string of the date
  */
 function parseDateWithFormat(dateStr, dateFormat) {
-  return moment(dateStr, dateFormat).toDate();
+  const parsedMomentDate = moment(dateStr, dateFormat);
+  if (parsedMomentDate.isValid()) return parsedMomentDate.toDate();
 }
 
 /**
  * Takes a string representation of a date, an input ('previous') format and a desired output format and returns a reformatted date string.
+ * If the date string is not valid (i.e. cannot be parsed with the given input format string), returns the original date string;
  * @param {*} dateStr string representation of a date (needs to be in format formatIn)
  * @param {*} formatIn input format string
  * @param {*} formatOut format string of the desired output date string
  */
 function reformatDateString(dateStr, formatIn, formatOut) {
-  return moment(dateStr, formatIn).format(formatOut);
+  const parsedMomentDate = moment(dateStr, formatIn);
+  return parsedMomentDate.isValid() ? parsedMomentDate.format(formatOut) : dateStr;
 }
 
 const DATEPICKER_UTIL_SELECTOR = 'input[type="date"], input[type="time"], input[type="datetime-local"]';
@@ -200,7 +204,8 @@ export class Datepicker {
     const dp = this.datepickerInstance;
     if (this._element.value) {
       if (toFancy) {
-        dp.selectDate(parseDateWithFormat(this._element.value, FORM_DATE_FORMAT[this.elementType]));
+        const parsedDate = parseDateWithFormat(this._element.value, FORM_DATE_FORMAT[this.elementType]);
+        if (parsedDate) dp.selectDate();
       } else {
         this._element.value = this.unformat();
       }