clicking on active folder navigation header causes infinite spinner

[adsworth]

This is more of a nitpick, but I know you guys like to have a smooth user experience.

Bug report

Steps to reproduce

1. open the gallery and navigate from the root folder at least two folders down. i.e. documents/something_or_other
2. now click on the folder name something_or_other in the top horizontal folder navigation bar.

Expected behaviour

nothing should happen

Actual behaviour

the loading spinner appears and only disappears when navigating away from the current folder.

Server configuration

Operating system: Linux corenas 4.4.0-62-generic #83-Ubuntu SMP Wed Jan 18 14:10:15 UTC 2017 x86_64

Web server: Apache/2.4.25 (Ubuntu) (apache2handler)

Database: pgsql PostgreSQL 9.5.5 on x86_64-pc-linux-gnu, compiled by gcc (Ubuntu 5.4.0-6ubuntu1~16.04.2) 5.4.0 20160609, 64-bit

PHP version: 7.0.15-0ubuntu0.16.04.4
Modules loaded: Core, date, libxml, openssl, pcre, zlib, filter, hash, Reflection, SPL, session, standard, apache2handler, mysqlnd, PDO, xml, apcu, bz2, calendar, ctype, curl, dom, mbstring, fileinfo, ftp, gd, gettext, iconv, igbinary, intl, json, exif, mcrypt, mysqli, pdo_mysql, pdo_pgsql, pgsql, Phar, posix, readline, redis, shmop, SimpleXML, sockets, sysvmsg, sysvsem, sysvshm, tokenizer, wddx, xmlreader, xmlwriter, xsl, zip, Zend OPcache

Nextcloud version: 12.0.0 - 12.0.0.29

Updated from an older Nextcloud/ownCloud or fresh install: update

Where did you install Nextcloud from: manual

List of activated apps:

App list

``` Enabled: - activity: 2.5.2 - admin_audit: 1.2.0 - bookmarks: 0.10.0 - bruteforcesettings: 1.0.2 - calendar: 1.5.3 - comments: 1.2.0 - contacts: 1.5.3 - dav: 1.3.0 - federatedfilesharing: 1.2.0 - federation: 1.2.0 - files: 1.7.2 - files_accesscontrol: 1.2.4 - files_markdown: 1.0.1 - files_pdfviewer: 1.1.1 - files_sharing: 1.4.0 - files_texteditor: 2.4.1 - files_trashbin: 1.2.0 - files_versions: 1.5.0 - files_videoplayer: 1.1.0 - firstrunwizard: 2.1 - gallery: 17.0.0 - issuetemplate: 0.2.1 - logreader: 2.0.0 - lookup_server_connector: 1.0.0 - nextcloud_announcements: 1.1 - notes: 2.3.1 - notifications: 2.0.0 - oauth2: 1.0.5 - password_policy: 1.2.2 - provisioning_api: 1.2.0 - serverinfo: 1.2.0 - sharebymail: 1.2.0 - survey_client: 1.0.0 - systemtags: 1.2.0 - tasks: 0.9.5 - telephoneprovider: 1.0.0 - theming: 1.3.0 - twofactor_backupcodes: 1.1.1 - updatenotification: 1.2.0 - workflowengine: 1.2.0

Disabled:

• deck
• encryption
• files_external
• user_external
• user_ldap

</details>

**The content of config/config.php:**
<details>
	<summary>Config report</summary>

{
"instanceid": "oc80d864d4c2",
"passwordsalt": "REMOVED SENSITIVE VALUE",
"datadirectory": "/mnt/data/oc_data",
"dbtype": "pgsql",
"version": "12.0.0.29",
"dbname": "nextcloud",
"dbhost": "localhost",
"dbtableprefix": "oc_",
"dbuser": "REMOVED SENSITIVE VALUE",
"dbpassword": "REMOVED SENSITIVE VALUE",
"installed": true,
"logfile": "/home/oc/logs/owncloud.log",
"forcessl": false,
"theme": "",
"maintenance": false,
"trusted_domains": [
"oc.adi.io",
"corenas.fritz.box"
],
"share_folder": "/Shared",
"loglevel": "3",
"secret": "REMOVED SENSITIVE VALUE",
"mail_from_address": "oc",
"mail_smtpmode": "php",
"mail_domain": "adi.io",
"asset-pipeline.enabled": false,
"filesystem_check_changes": 0,
"trashbin_retention_obligation": "auto",
"htaccess.RewriteBase": "/",
"enable_previews": true,
"memcache.local": "\OC\Memcache\Redis",
"memcache.locking": "\OC\Memcache\Redis",
"redis": {
"host": "localhost",
"port": 6379
},
"overwrite.cli.url": "https://oc.adi.io"
}

</details>

**Are you using external storage, if yes which one:** files_external is disabled

**Are you using encryption:** no

**Are you using an external user-backend, if yes which one:** LDAP/ActiveDirectory/Webdav/...

### Client configuration
**Browser:** Mozilla/5.0 (X11; Fedora; Linux x86_64; rv:53.0) Gecko/20100101 Firefox/53.0

**Operating system:**