mixed language in project administration

Summary

Basically, when the default language in JIRA is switch to German and the user profile language is set to English, JIRA will display mix language of English and German in the project administration screen.

Environment

JIRA 7.0.0 (JIRA Core or Software)

Steps to Reproduce

1. Set the default language in JIRA to German (under General Configuration)
2. Login in as another user and then set the profile language to English
3. Access the project administration screen

Expected Results

The project administration screen display in English language only.

Actual Results

The project administration screen display in mixed language (English and German) 1.png

Notes

This behaviour is actually a regression from JRA-28392.

Workaround

Currently there is no known workaround yet.