Interrapt G26

The "Surname" input field in "Edit" section of Users accepts more than 25 characters, that is, the upper limit

Steps
1.Navigate to "Interrapt"
2.Open "Attendees"
3.Click on "Edit" button on some of the created attendees
4.In the "Surname" field insert 26 characters
5.Fill the other fields with valid data
6.Click on "Edit" button

Expected result
There should be message shown that the surname field is required in red letters

Actual result
Even that the criteria of the field is not met, the attendee can be edited