>> 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]]