The self-registration on the OPAC allows for invalid dob to be saved, such as with spaces instead of numbers. This breaks patron search for searches involving that patron.
We are seeing the same since the update, I filed as: Bug 36488 - Flatpickr creates invalid date entries *** This bug has been marked as a duplicate of bug 36488 ***
What is stored in the DB, Lisette? 0000-00-00?