\di+ cannot show the same name indexes

[フブキダイスキ]

Hi,
    After I create the same name index on the heap table and the temporary
table, I can only get the temporary table's index by \di+.

create table t1(c1 int);
create temp table t2(c1 int);

create index idx1 on t1(c1);
\di+
                      List of relations
 Schema | Name | Type  | Owner | Table |  Size  | Description
--------+------+-------+-------+-------+--------+-------------
 public | idx1 | index | zhrt  | t1    | 128 kB |
(1 row)

create index idx1 on t2(c1);
\di+
                         List of relations
   Schema    | Name | Type  | Owner | Table |  Size  | Description
-------------+------+-------+-------+-------+--------+-------------
 pg_temp_298 | idx1 | index | zhrt  | t2    | 128 kB |
(1 row)

Is it the expected bavior?