Site name in header does not display the real configuration value
Summary
In some sites, the site name in the header does not show the configuration site name but an overridden value (check screenshot)
Possible fixes
In https://gitlab.cern.ch/web-team/drupal/public/d8/themes/cern/-/blob/master/cernclean.theme#L18, change the get
function to getRawData()
which returns the original value and not the overridden one.