Locale encoding translation problem

Hey, Im trying to make a translation of labels for Polish locale. So I've made a jasperserver_messages_pl_PL.properties with translated some of the labels and made polish locale available.

The labels changed but I've encountered a problem with character encoding, some of special polish characters are messed up, for example "Zarządzaj" looks like "Zarządzaj"

Thanks in advance!

Found a similar question but cannot find the linked answer:

https://community.jaspersoft.com/questions/539361/jasperserver-localizat...