>> libtext-csv-perl 1.33-2 and libtext-csv-xs-perl is not installed.
>> I'll do some futher diagnosis and poking around.
>> — [[Jon]]
+>>
>> OK: issue exists with oldstable/Stretch, and is seemingly fixed in stable/Buster.
>> `libcsv-text-xs-perl` doesn't seem to matter (presence or absence doesn't change
>> the bug). Upgrading just `libtext-csv-perl` on a Stretch host with Buster's
>> 1.99-1 is not sufficent to fix it. As per the error, I think libperl5 might be
->> relevant, i.e. bug present in 5.24.1-3+deb9u5 and fixed by 5.28.1-6. — [[Jon]]
+>> relevant, i.e. bug present in 5.24.1-3+deb9u5 and fixed by 5.28.1-6.
+>>
+>> 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]]