Link consisting of non-ASCII characters is treated as a non-existing page
Platform notice: Server and Data Center only. This article only applies to Atlassian products on the Server and Data Center platforms.
Support for Server* products ended on February 15th 2024. If you are running a Server product, you can visit the Atlassian Server end of support announcement to review your migration options.
*Except Fisheye and Crucible
Problem
The following markup is being defined in a page, page A:
[Tésté]
Where "Tésté" is a valid and existing page in Confluence. Saving page A above render the link in red. It indicates that the page is not defined. The encoding for the environment is correct.
Cause
There is an issue which is related to PostgreSQL handling non-ASCII lower case characters.
Workaround
Workarounds are provided in Configuring Database Character Encoding.
Resolution
Update the initdb command:
initdb -E UTF-8 --locale <your locale>.UTF8 /var/lib/pgsql/data