cache lookup failed when \d t concurrent with DML change column data type

hi. I think I found a bug.
PostgreSQL 18devel_debug_build_45188c2ea2 on x86_64-linux, compiled by
gcc-14.1.0, 64-bit
commit at 45188c2ea2.
Ubuntu 22.04.4 LTS

setup:
drop table t cascade;
create table t(a int PRIMARY key);

IN session1:
step "change data type" {begin; alter table t alter column a set data
type int4;}
step "s1" {commit;}

IN session2:
step "psql_another_session" {\d t}

permutation "change data type" "psql_another_session" "s1"

\set ECHO_HIDDEN on
/******** QUERY *********/
SELECT c2.relname, i.indisprimary, i.indisunique, i.indisclustered,
i.indisvalid, pg_catalog.pg_get_indexdef(i.indexrelid, 0, true),
pg_catalog.pg_get_constraintdef(con.oid, true), contype,
condeferrable, condeferred, i.indisreplident, c2.reltablespace,
con.conperiod
FROM pg_catalog.pg_class c, pg_catalog.pg_class c2, pg_catalog.pg_index i
LEFT JOIN pg_catalog.pg_constraint con ON (conrelid = i.indrelid AND
conindid = i.indexrelid AND contype IN ('p','u','x'))
WHERE c.oid = '34405' AND c.oid = i.indrelid AND i.indexrelid = c2.oid
ORDER BY i.indisprimary DESC, c2.relname;
/************************/

ERROR: cache lookup failed for attribute 1 of relation 34418