diff --git a/src/test/regress/expected/triggers.out b/src/test/regress/expected/triggers.out
index df6c2498e7..3fb0d3edd1 100644
--- a/src/test/regress/expected/triggers.out
+++ b/src/test/regress/expected/triggers.out
@@ -3027,3 +3027,62 @@ drop table self_ref;
 drop function dump_insert();
 drop function dump_update();
 drop function dump_delete();
+-- verify transition table conversion slot's lifetime
+-- https://postgr.es/m/39a71864-b120-5a5c-8cc5-c632b6f16761@amazon.com
+create table convslot_test_parent (col1 text primary key);
+create table convslot_test_child (col1 text primary key,
+	foreign key (col1) references convslot_test_parent(col1) on delete cascade on update cascade
+);
+alter table convslot_test_child add column col2 text not null default 'tutu';
+insert into convslot_test_parent(col1) values ('1');
+insert into convslot_test_child(col1) values ('1');
+insert into convslot_test_parent(col1) values ('3');
+insert into convslot_test_child(col1) values ('3');
+create or replace function trigger_function1()
+returns trigger
+language plpgsql
+AS $$
+begin
+raise notice 'trigger = %, old_table = %',
+          TG_NAME,
+          (select string_agg(old_table::text, ', ' order by col1) from old_table);
+return null;
+end; $$;
+create or replace function trigger_function2()
+returns trigger
+language plpgsql
+AS $$
+begin
+raise notice 'trigger = %, new table = %',
+          TG_NAME,
+          (select string_agg(new_table::text, ', ' order by col1) from new_table);
+return null;
+end; $$;
+create trigger but_trigger after update on convslot_test_child
+referencing new table as new_table
+for each statement execute function trigger_function2();
+update convslot_test_parent set col1 = col1 || '1';
+NOTICE:  trigger = but_trigger, new table = (11,tutu), (31,tutu)
+create or replace function trigger_function3()
+returns trigger
+language plpgsql
+AS $$
+begin
+raise notice 'trigger = %, old_table = %, new table = %',
+          TG_NAME,
+          (select string_agg(old_table::text, ', ' order by col1) from old_table),
+          (select string_agg(new_table::text, ', ' order by col1) from new_table);
+return null;
+end; $$;
+create trigger but_trigger2 after update on convslot_test_child
+referencing old table as old_table new table as new_table
+for each statement execute function trigger_function3();
+update convslot_test_parent set col1 = col1 || '1';
+NOTICE:  trigger = but_trigger, new table = (111,tutu), (311,tutu)
+NOTICE:  trigger = but_trigger2, old_table = (11,tutu), (31,tutu), new table = (111,tutu), (311,tutu)
+create trigger bdt_trigger after delete on convslot_test_child
+referencing old table as old_table
+for each statement execute function trigger_function1();
+delete from convslot_test_parent;
+NOTICE:  trigger = bdt_trigger, old_table = (111,tutu), (311,tutu)
+drop table convslot_test_child, convslot_test_parent;
diff --git a/src/test/regress/sql/triggers.sql b/src/test/regress/sql/triggers.sql
index 06043b2020..ba0bd90548 100644
--- a/src/test/regress/sql/triggers.sql
+++ b/src/test/regress/sql/triggers.sql
@@ -2274,3 +2274,68 @@ drop table self_ref;
 drop function dump_insert();
 drop function dump_update();
 drop function dump_delete();
+
+-- verify transition table conversion slot's lifetime
+-- https://postgr.es/m/39a71864-b120-5a5c-8cc5-c632b6f16761@amazon.com
+create table convslot_test_parent (col1 text primary key);
+create table convslot_test_child (col1 text primary key,
+	foreign key (col1) references convslot_test_parent(col1) on delete cascade on update cascade
+);
+
+alter table convslot_test_child add column col2 text not null default 'tutu';
+insert into convslot_test_parent(col1) values ('1');
+insert into convslot_test_child(col1) values ('1');
+insert into convslot_test_parent(col1) values ('3');
+insert into convslot_test_child(col1) values ('3');
+
+create or replace function trigger_function1()
+returns trigger
+language plpgsql
+AS $$
+begin
+raise notice 'trigger = %, old_table = %',
+          TG_NAME,
+          (select string_agg(old_table::text, ', ' order by col1) from old_table);
+return null;
+end; $$;
+
+create or replace function trigger_function2()
+returns trigger
+language plpgsql
+AS $$
+begin
+raise notice 'trigger = %, new table = %',
+          TG_NAME,
+          (select string_agg(new_table::text, ', ' order by col1) from new_table);
+return null;
+end; $$;
+
+create trigger but_trigger after update on convslot_test_child
+referencing new table as new_table
+for each statement execute function trigger_function2();
+
+update convslot_test_parent set col1 = col1 || '1';
+
+create or replace function trigger_function3()
+returns trigger
+language plpgsql
+AS $$
+begin
+raise notice 'trigger = %, old_table = %, new table = %',
+          TG_NAME,
+          (select string_agg(old_table::text, ', ' order by col1) from old_table),
+          (select string_agg(new_table::text, ', ' order by col1) from new_table);
+return null;
+end; $$;
+
+create trigger but_trigger2 after update on convslot_test_child
+referencing old table as old_table new table as new_table
+for each statement execute function trigger_function3();
+update convslot_test_parent set col1 = col1 || '1';
+
+create trigger bdt_trigger after delete on convslot_test_child
+referencing old table as old_table
+for each statement execute function trigger_function1();
+delete from convslot_test_parent;
+
+drop table convslot_test_child, convslot_test_parent;