>> EDIT: yes indeed merely upgrading to libperl5.28=5.28.1-6 in stretch fixes the
>> issue.
>> — [[Jon]]
+>>
+>> Post Buster-upgrade, and it's *still* broken on my webhost, which shows
+>> `[\[!table Error: Wide character at /usr/lib/x86_64-linux-gnu/perl/5.28/Encode.pm line 296.]]`
+>> with libperl5.28:amd64 5.28.1-6, libtext-csv-perl 1.99-1 and
+>> libtext-csv-xs-perl 1.38-1. Further fiddling will commence.
+>> (removing libtext-csv-xs-perl does not help.)
+— [[Jon]]