Sorting A-Z doesn‘t work properly

Steps to reproduce

1. Add files and folders as shown in the photo below, including leading special characters
2. Favorite one of them
3. Sort them A-Z or Z-A

Expected behaviour

The folders starting with special characters should be top of the list, favorite or not

Actual behaviour

Some of those folders are top of the list if favorited, some are at the end of the list. They should at least be directly underneath the favorites.
Maybe favorites should have a visual distinction background color or the like.

Screenshots

Logs

If applicable, you can post the iOS app or server logs (removing any sensitive information).

Reasoning or why should it be changed/implemented?

for it to work properly

Environment data

iOS version: e.g. iOS 14.4.1
16 PB RC/Final

Nextcloud iOS app version: see More > Settings
4.4.4.0

Server operating system:

Web server: Apache, nginx

Database:

PHP version:

Nextcloud version: see Nextcloud admin page

Start by reproducing the issue on iOS 16 with Nextcloud iOS 4.4.4.0 using files and folders with leading special characters, then inspect the app's sorting and favorites behavior. Done means A-Z and Z-A place special-character folders consistently, with favorites handled according to the expected ordering.