recovery.conf' is not creating in pg_basebackup with version 13

Hi,
while doing 'pg_basebackup' with the option '--write-recovery-conf' , 
'recovery.conf'  is not creating in basebackup directory and I'm using the below command. 
'/mnt1/pg13/bin/pg_basebackup -h localhost -p 5433 -U postgres -D /mnt1/pg13/bbkp -P --write-recovery-conf'
[postgres@ postgres bbkp1]$ ll  /mnt1/pg13/bbkp 
total 252

-rw-------. 1 postgres postgres    224 Sep 26 23:13 backup_label

-rw-------. 1 postgres postgres 135117 Sep 26 23:13 backup_manifest

drwx------. 5 postgres postgres   4096 Sep 26 23:13 base

drwx------. 2 postgres postgres   4096 Sep 26 23:13 global

drwx------. 2 postgres postgres   4096 Sep 26 23:13 pg_commit_ts

drwx------. 2 postgres postgres   4096 Sep 26 23:13 pg_dynshmem

-rw-------. 1 postgres postgres   4831 Sep 26 23:13 pg_hba.conf

-rw-------. 1 postgres postgres   1636 Sep 26 23:13 pg_ident.conf

drwx------. 4 postgres postgres   4096 Sep 26 23:13 pg_logical

drwx------. 4 postgres postgres   4096 Sep 26 23:13 pg_multixact

drwx------. 2 postgres postgres   4096 Sep 26 23:13 pg_notify

drwx------. 2 postgres postgres   4096 Sep 26 23:13 pg_replslot

drwx------. 2 postgres postgres   4096 Sep 26 23:13 pg_serial

drwx------. 2 postgres postgres   4096 Sep 26 23:13 pg_snapshots

drwx------. 2 postgres postgres   4096 Sep 26 23:13 pg_stat

drwx------. 2 postgres postgres   4096 Sep 26 23:13 pg_stat_tmp

drwx------. 2 postgres postgres   4096 Sep 26 23:13 pg_subtrans

drwx------. 2 postgres postgres   4096 Sep 26 23:13 pg_tblspc

drwx------. 2 postgres postgres   4096 Sep 26 23:13 pg_twophase

-rw-------. 1 postgres postgres      3 Sep 26 23:13 PG_VERSION

drwx------. 3 postgres postgres   4096 Sep 26 23:13 pg_wal

drwx------. 2 postgres postgres   4096 Sep 26 23:13 pg_xact

-rw-------. 1 postgres postgres    336 Sep 26 23:13 postgresql.auto.conf

-rw-------. 1 postgres postgres  27977 Sep 26 23:13 postgresql.conf
-rw-------. 1 postgres postgres      0 Sep 26 23:13 standby.signal

and standby.signal file created but is empty.

Am I doing wrong or its a kind of bug or this option removed in v13?
PostgreSQL Version:
PostgreSQL 13.0 on x86_64-pc-linux-gnu, compiled by gcc (GCC) 4.8.5 20150623 (Red Hat 4.8.5-39), 64-bit

Thanks,Naga