People Directory: Filtering for terms with umlauts in standard elements does not work after adjusting indexing language
Problem
Scenario:
User A has a term with an umlaut in a standard Confluence profile element
example: term "Bürogestaltung" in field Department
In the People Directory, the field and term are used for filtering
example: "Department" as filter, "Bürogestaltung" as value
User A should be contained in the search results but is not
Cause
Most likely, the indexing language of Confluence was changed without performing a restart of Confluence.
Solution
Restarting Confluence should fix the issue (any time after the indexing language was changed).