BUG #16005: cannot use \d to get description of table

The following bug has been logged on the website:

Bug reference:      16005
Logged by:          mariel cherkassky
Email address:      mariel.cherkassky@gmail.com
PostgreSQL version: 12beta3
Operating system:   centos6
Description:

I just upgraded from 11 to 12betav3 in one of my test environments.
Whenever I try to get description of a table with \d I'm getting the
following error :  
postgres=# \d backup
2019-09-12 15:35:11.165 IDT [27877] ERROR:  column c.relhasoids does not
exist at character 121
2019-09-12 15:35:11.165 IDT [27877] STATEMENT:  SELECT c.relchecks,
c.relkind, c.relhasindex, c.relhasrules, c.relhastriggers, c.relrowsecurity,
c.relforcerowsecurity, c.relhasoids, '', c.reltablespace, CASE WHEN
c.reloftype = 0 THEN '' ELSE
c.reloftype::pg_catalog.regtype::pg_catalog.text END, c.relpersistence,
c.relreplident
        FROM pg_catalog.pg_class c
         LEFT JOIN pg_catalog.pg_class tc ON (c.reltoastrelid = tc.oid)
        WHERE c.oid = '940549';
ERROR:  column c.relhasoids does not exist
LINE 1: ...riggers, c.relrowsecurity, c.relforcerowsecurity, c.relhasoi...