The highlighted row is a bug. It can cause that further filtering of policies can be limited only to one resource - if more than one demand is in the request body. It is in policy/interface.py file

scope_policies = []
references = config_local.get('references', {})
pscope = config_local.get('policy_info', {}).get(type_service, {}).get('policy_scope', [])
scope_fields = {}
policies = {}
for scopes in pscope:
for key in scopes.keys():
for field in scopes[key]:
scope_fields[key] = list_flatten([get_scope_fields(field, references, req, policies)
if 'get_param' in field else field])
if scope_fields.get('resources') and len(scope_fields['resources']) > 1:
for s in scope_fields['resources']:
scope_fields['resources'] = [s]