System Administrator wrongly Translated as "Użytkownicy JIRA" (JIRA Users) in Polish

On the Global Permissions page "Jira System Administrators" are Translated as "Użytkownicy JIRA". 

Steps to Reproduce

1. Install a fresh JIRA instance using version 7.7.0/7.7.1.
2. Change the default or profile language to Polish language.
3. Navigate to Administration Setting > System > Global Permission

Expected Results

"JIRA System Administrators" should be translated into "Administratorzy systemu JIRA" 

 Actual Results

"JIRA System Administrators" is translated into "Użytkownicy JIRA"