AutoYaST <authorized_key> not working on openSUSE Tumbleweed

Hello,
I'm making my own autoinst.xml files. Everything works fine but I cannot give a user authorized_keys file. After installing, I login and find there is no $HOME/.ssh/authorized_keys files, even no $HOME/.ssh folder.

Below is part of autoinst.xml:

<user t="map">
    <username>user_name</username>
    <encrypted t="boolean">true</encrypted>
    <user_password>xxxxxxxxxxxx</user_password>
    <authorized_keys t="list">
        <authorized_key>ssh-rsa xxxxxxxxxx</authorized_key>
    </authorized_keys>
</user>

Is there a bug that authorized_keys cannot be assigned in AutoYast? Thank you.