Move operation shows "t('activity', 'Home')" in mouseover

[myxor]

Steps to reproduce

1. Move folder from any subfolder to nextcloud home
2. Open activity app
3. Hover with mouse over house icon for the move operation

Expected behaviour

Mouseover should be describing target, which is "Home" or "Root" of the Nextcloud.

Actual behaviour

Mouseover shows

t('activity', 'Home')

see picture:

Server configuration

Operating system: Ubuntu

Web server: Nginx

Database: MySQL

PHP version: 7.2

Nextcloud version: 15.0.6

Where did you install Nextcloud from: Official zip file

Signing status:

Login as admin user into your Nextcloud and access
http://example.com/index.php/settings/integrity/failed
paste the results here.

No errors have been found.

Are you using an external user-backend, if yes which one: LDAP/ActiveDirectory/Webdav/...
No

Client configuration

Browser:
Firefox 66.0.2

Operating system:
Ubuntu