ownCloud adds "(2)" to shared folders

[ghost]

Steps to reproduce

1. user1 share folder to user2

Expected behaviour

user2 should see the shared folder from user1 with the correct name

Actual behaviour

for user 2: every week (2) is added. for example after 3 weeks "folder (2) (2) (2)"
for user 1: folder name does not change.

Server configuration

Operating system: CentOS Linux release 7.2.1511 (Core)

Web server: Apache 2.4.6-40.el7.centos.4

Database: MariaDB 5.5.50-1.el7_2

PHP version: 5.4.16-36.3.el7_2

ownCloud version: ownCloud 9.1.0 (stable)

Updated from an older ownCloud or fresh install: Maybe updated from 8. Not sure.

Where did you install ownCloud from: rpm, epel repository

Signing status (ownCloud 9.0 and above):

No errors have been found.

List of activated apps:
Activity
Collaborative tags
Comments
Deleted files
Federation
First run wizard
Gallery
LDAP user and group backend
Mail Template Editor
Notifications
PDF Viewer
Provisioning API
Share Files
Text Editor
Update notification
Versions
Video player

The content of config/config.php:

<?php
$CONFIG = array (
  'updatechecker' => false,
  'instanceid' => 'oco9kxowi56v',
  'trusted_domains' =>
  array (
    0 => 'xyz.net',
  ),
  'datadirectory' => '/data',
  'overwrite.cli.url' => 'http://xyz.net/owncloud',
  'dbtype' => 'mysql',
  'version' => '9.1.0.15',
  'dbname' => 'dbname',
  'dbhost' => 'dbhost',
  'dbtableprefix' => 'oc_',
  'dbuser' => 'dbuser',
  'logtimezone' => 'UTC',
  'installed' => true,
  'ldapIgnoreNamingRules' => false,
  'memcache.local' => '\\OC\\Memcache\\APCu',
  'trashbin_retention_obligation' => '10, auto',
  'ldapUserCleanupInterval' => 10,
  'loglevel' => 2,
  'maintenance' => false,
);

Are you using external storage, if yes which one: no

Are you using encryption: no

Are you using an external user-backend, if yes which one: ActiveDirectory

Client configuration

Browser: Firefox / Chrome

Operating system: Windows 7

[ghost]

ownCloud version: ownCloud 9.1.0 (stable)

From the issue template you have filled out:

Before reporting any issues please make sure that you're using the latest available version for your major branch (e.g. 9.0.x), see https://owncloud.org/changelog/

In your case 9.1.1 is current which already has fixed this issue as seen in: #24575

[PVince81]

It's more likely to be #25718 especially since you're using LDAP. You can either try updating to 9.1.2RC2, wait for 9.1.2 final or patch your setup #25718 (comment)

[lock]

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