already Tested your 1.12 R4 Theme, its not working correctly
The issue isn’t with osTicket Awesome specifically. The issue is that osTicket implemented a new system for displaying Ticket Queues. Although it looks almost identical the code is very different. And they broke the translations for many words in every language.
But please take a look at this page for a temporary solution to restore German translations in osTicket Awesome:
https://osticketawesome.com/forums/topic/osticket-1-14-patch-4-german/#post-5896
I hope this helps.