pg_dump with disable trigger

I think I found bug on pg_dump 9.6.8.

The bug arise when using pg_dump with --disable-trigger option.
The command just :
pg_dump -f /tmp/test_disable_trigger.sql -a -b --disable-triggers -t some_table some_database

On the resulted script, it simply did

ALTER TABLE public.some_table DISABLE TRIGGER ALL;

COPY command

ALTER TABLE public.some_table ENABLE TRIGGER ALL;

This become a problem, when the destination table already has Disabled user triggers, it gets enabled by the dump script.
It also altered another kind of trigger like Triggers firing on replica only, get altered to ordinary triggers.

Thanks
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