Description

Experience Analytics reports might show an Unknown Campaign label instead of the real name of the created campaigns if the campaigns were created in a non-English language.

Solution

To resolve the issue, download and install the patch compatible with the affected product version found on this page:
https://github.com/SitecoreSupport/Sitecore.Support.78521/releases.

To get a solution for other Sitecore XP releases, contact Sitecore Support.