The flaw we discovered
Created by: fhdk
confirmed fix https://github.com/manjaro/pacman-mirrors/commit/9beda758337e554b6a9b40047f74013e4a70e309
Temporary solution I have succesfully recreated the issue on my machine and the only way to escape that faulty mirrorlist is
sudo pacman-mirrors -i -m random
Then select mirrors and save the list.
https://forum.manjaro.org/t/pacman-mirrors-mirrorlist-issue/19905