Bug report

Summary

When a Confluence user has German set as a profile language, notifications in the Workbox part are shown as Undefined

Environment

Confluence is set up with a working notifications are allowed by Confluence.

Steps to Reproduce

1. Set the Confluence user profile language to German
2. Add comments or mentions to the users watched contents/page
3. Subsequent notifications in the Confluence workbox will be missing the username/pagename it is instead shown as Undefined

Expected Results

User name/Pagename is shown correctly. When the language in the user profile is English, all is as expected and user names are shown.

Actual Results

Undefined instead of usermentions/pagename

Workaround

No known workaround