BUG #8580: search_path unexpected behavior with pg_temp

The following bug has been logged on the website:

Bug reference: 8580
Logged by: Alexey Bashtanov
Email address: bashtanov(at)imap(dot)cc
PostgreSQL version: 9.2.4
Operating system: Linux Centos 6.4
Description:

[STEPS TO REPRODUCE]
CREATE OR REPLACE FUNCTION foo() RETURNS void
AS $$
begin
create temporary table zoo () on commit preserve rows;
delete from zoo;
drop table zoo;
end;
$$ language plpgsql set search_path = pg_catalog, public, pg_temp;

begin;
select foo();
abort;
begin;
select foo();

[EXPECTED]
no errors
[RECEIVED]
ERROR: relation "zoo" does not exist
LINE 1: delete from zoo

[ALSO]
1)reproducibility between 50% and 100%
2)also can be reproduced on pg 9.1.9
3)reproduced if replace delete by perform
4)not reproduced if replace delete by alter

Regards,
Alexey Bashtanov