PGPOOL Load Balancing: Create Sequence is going to replica

I created a pgpool instance which can connect to one master database(primary for write) and one read replica. I have enabled below parameter:

disable_load_balance_on_write='dml_adaptive';

Now my below command fails when connect to pgpool :

create sequence if not exists public.xyz;
ERROR: cannot execute CREATE SEQUENCE in a read-only transaction

I am surprised "CREATE" statement is getting load balanced to replica. Anybody can throw some light here please?