https://forums.freebsd.org/threads/pam-not-so-great-idea.52496/#post-294644
http://marc.info/?l=openbsd-misc&m=143766047211907&w=2
Is this an issue in opensuse?
I assume that it is a “problem”.
I am a bit surprised to read of this. I recall warnings about keyboard interactive several years ago.
In any case, you can disable that in sshd_config. Personally, I only allow public key authentication, so this does not appear to be a problem here.