@Sergei_Shablovsky said in Screen fonts & mode in local terminal issue:

Already have in /etc/loader.conf

:charset=UTF-8:
:lang=en_US.UTF-8:
:setenv=LC_COLLATE=C:
:umask=022:

But unsuccessfully, - the result You able to see above….

Those are not loader.conf configuration directives, those look like /etc/login.conf configuration. (And read the note at the top of that file, especially the part where you have to run cap_mkdb /etc/login.conf after any edits)

It does seem like you have some sort of issue/mismatch with UTF-8 handling somewhere, but it's hard to say exactly where. I have no issues with UTF-8 in my terminals over serial or SSH but I have no idea what that KVM setup might be doing.