Just found $SUBJECT involving time with time zone and a subselect. I still don't have narrowed to the exact table/index minimal schema but if you run this query on the regression database it will creash.
``` update public.brintest_multi set timetzcol = (select tz from generate_series('2021-01-01'::timestamp with time zone, '2021-01-31', '5 days') tz limit 1) ; ```
attached a backtrace. Let me know if you need extra information.
-- Jaime Casanova Director de Servicios Profesionales SYSTEMGUARDS - Consultores de PostgreSQL
