Nextcloud move folder - bad folder sorting when use external storage #9011

When I want to move folder to another and I want to choose directory I see that list of target directories is not sorted alphabeticly...

Screen: http://tinypic.com/r/152ks4k/9

Any advice please?

Steps to reproduce

1. Use local storage as external storage
2. Try to move folder
3. You will se bad sorted folders

Expected behaviour

Alphabetical sorted folders

Actual behaviour

Strange sorted folders

Server configuration

Operating system:
Debian 9
Web server:
Apache2
Database:
mysql
PHP version:
PHP 7
Nextcloud version: (see Nextcloud admin page)
13