Describe your changes.
In the past, pg catalog use sql SELECT schema_name FROM information_schema.schemata where schema_owner='<UserName>'; to select schemas of an user. Howerver, this sql can not find all schemas that a user can access, that because:
A user may not be the owner of an schema, but may have read permission on the schema.
A user may inherit the permissions of its user group and thus have read permissions on one schema.
For these reasons, we replace the sql statement with select nspname from pg_namespace where has_schema_privilege('<UserName>', nspname, 'USAGE');
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