osTicket versie: v1.14-rc2 (4b9a699)
Web Server Software: Apache/2.4.25 (Debian)
MySQLversie 10.1.38
PHPversie 7.0.33-0+deb9u3

When changing the due date in a ticket the timeformat on the calander changes from HH:MM to HHHH:MM

Issue is in IE, Chrome and FF
console gives:

Error parsing the date/time string: Wrong time format
date/time string = 29-10-19 13:15
timeFormat = HHHH:mm
dateFormat = dd-mm-y