we recentyl upgraded to Version 6.2.2 of ACS an noticed, that tags are no longer shown in the document library of a site:

the underlying Service
/share/proxy/alfresco/api/tagscopes/site/swsdp/documentLibrary/tags?topN=100
responds with no entries.
but when i change to the document library view in the repository, the tags are shown as expected:

the Tags are also shown in the tag manager in the admin console.
Is this related to some configuration or am i missing something else?