BUG #12750: issue with pg_restore s exit code when warnings are there

The following bug has been logged on the website:

Bug reference: 12750
Logged by: Rasna
Email address: trasnaramesh(at)gmail(dot)com
PostgreSQL version: 9.3.5
Operating system: Linux
Description:

commands:

bin/pg_dump -b -o -Fc -Z 0 -p 5333 -U user template1 -f db.dump
bin/pg_restore -c -h localhost -p 5333 -U user -d template1 db.dump

steps followed:

add new tables to DB and took dump

delete the newly added tables

try restore with dump file

restore exited with code 1 but still tables are restore successfully.

error in pg_restore:
pg_restore: [archiver (db)] could not execute query: err-1: table
"test1" does not exist
Command was: DROP TABLE public.test1;
WARNING: errors ignored on restore: 2

Is this the expected behavior for dump/restore feature with tables
add/delete steps?

Why pg_restore exit code is 1 when warning are there?