Tags not appearing anymore since 14.04

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Nextcloud version : 14.04
Operating system and version : Ubuntu 16.04
Apache or nginx version : 2.4.18
PHP version (eg, 7.1): 7.0.2

The issue you are facing:

In detail pannel, tags do not appear since 14.04 and are impossible to set to a file or folder.

Is this the first time you’ve seen this error? (Y/N): N

14.03 sometimes needed a page refresh to show available tags.

Steps to replicate it:

  1. In admin pannel settings > workflow create tags (Public, Restricted or Invisible)
  2. Update from 14.03 to 14.04
  3. Go browse files and click on details

The output of your Nextcloud log in Admin > Logging:

nothing related to this issue.

The output of your config.php file in /path/to/nextcloud (make sure you remove any identifiable information!):

$CONFIG = array (
  'instanceid' => 'fooid',
  'passwordsalt' => 'salt',
  'secret' => 'secret',
  'trusted_domains' => 
  array (
    0 => allo.aloo.fr',
  ),
  'datadirectory' => '/var/www/html/allo/data',
  'dbtype' => 'mysql',
  'version' => '14.0.4.2',
  'overwrite.cli.url' => 'http://allo.aloo.fr',
  'dbname' => 'allo',
  'dbhost' => 'localhost',
  'dbport' => '',
  'dbtableprefix' => 'oc_',
  'dbuser' => 'oc_admin2',
  'dbpassword' => 'dbpassword',
  'installed' => true,
  'mail_from_address' => 'noreply',
  'mail_smtpmode' => 'smtp',
  'mail_domain' => 'serverdomainname',
  'mail_smtphost' => 'ipsemtphost',
  'mail_smtpport' => '25',
  'memcache.local' => '\\OC\\Memcache\\APCu',
  'maintenance' => false,
  'simpleSignUpLink.shown' => false,
  'updater.secret' => 'updater secret',
  'theme' => '',
  'loglevel' => 2,
  'updater.release.channel' => 'stable',
);


The output of your Apache/nginx/system log in /var/log/____:
access.log when I click on details (nothing happen when I click on tags then):

10.233.0.191 - - [23/Nov/2018:10:46:01 +0100] "GET /ocs/v2.php/apps/files_sharing/api/v1/shares?format=json&path=%2F00-Share&reshares=true HTTP/1.1" 200 690 "-" "Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:63.0) Gecko/20100101 Firefox/63.0"
10.233.0.191 - - [23/Nov/2018:10:46:01 +0100] "GET /ocs/v2.php/apps/files_sharing/api/v1/shares?format=json&path=%2F00-Share&shared_with_me=true HTTP/1.1" 200 690 "-" "Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:63.0) Gecko/20100101 Firefox/63.0"
10.233.0.191 - - [23/Nov/2018:10:46:01 +0100] "PROPFIND /remote.php/dav/systemtags-relations/files/151 HTTP/1.1" 207 1170 "-" "Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:63.0) Gecko/20100101 Firefox/63.0"
10.233.0.191 - - [23/Nov/2018:10:46:01 +0100] "GET /ocs/v2.php/apps/notifications/api/v2/notifications HTTP/1.1" 200 729 "-" "Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/70.0.3538.77 Safari/537.36"

error.log when I click on details

Nothing

If Someone knows what to update to apply tags through mysqldb It would help, waiting for a fix.

Find the same problem.
Looks like it will be fixed in 14.0.5:

Same problem here.
Hopefully the update will be published soon.