BUG #15695: Failure to restore a dump, ERROR: operator does not exist: public.hstore = public.hstore

The following bug has been logged on the website:

Bug reference:      15695
Logged by:          Yuri Cherio
Email address:      cherio@gmail.com
PostgreSQL version: 10.7
Operating system:   Ubuntu 18.04 64bit
Description:

I am exporting DB from 10.6 and importing into 10.7 and an UPDATE rule fails
to restore. I have a view with a rule that starts like this

CREATE OR REPLACE RULE table_view__upd__rul AS ON UPDATE
    TO schema.table_view
    DO INSTEAD (
        UPDATE sch.tab
        SET
            updated_at = NEW.updated_at,
            updated_by = NEW.updated_by,
            hstore_field = NEW.hstore_field
        WHERE id = OLD.id
            AND
            (
                OLD.updated_at IS DISTINCT FROM NEW.updated_at OR
                OLD.updated_by IS DISTINCT FROM NEW.updated_by OR
                OLD.hstore_field IS DISTINCT FROM NEW.hstore_field
            );
....

I export into a custom format as
pg_dump -F c -Z 0 -T bak.* -T tmp.* -h host1 -p port database > file.dump

and import as
pg_restore -v -d database -j 4 -h host2 -p port file.dump

which at some point logs an error
pg_restore: [archiver (db)] could not execute query: ERROR:  operator does
not exist: public.hstore = public.hstore
LINE 3: ...ISTINCT FROM (new.updated_by)::text) OR (old.hstore_field IS
DISTINC...

with an arrow pointing to "old.hstore_field IS -->DISTINC..."

From the log I can see that hstore was extension successfully created and
many other tables, views and functions successfully recreated prior to this
error.

This looks like a bug to me :(

Thank you!