Changing the date/time display format in opennms.properties breaks the display of the requisitions list (Admin -> Manage Provisioning Requisition), see attached hardcopy.
Date/time display in event/alarm/notification/outage lists work as desired.
Configured in opennms-properties:
org.opennms.ui.datettimeformat=dd.MM.yyyy' 'HH:mm:ss' ('O')'
which results in the following display format:
02.12.2019 18:11:32 (GMT+1)
About the environment:
Windows-Environment / Language is German, Browser Versions also German.
I used Firefox 70.0.1 (64-bit) to get the error messages from the last mail.
Also tested with IE 11.772.17763.0 Update Version 11.0.146, which fails too. Error message in IE11:
IllegalArgumentException: Pattern using (localized) text not implemented, use js-joda-locale plugin!