Channel config decoding issue

Hi,
I'm having an issue with fetch of the config block for a channel, for some reason when fetching config block using python sdk config part `/channel_group/groups/Orderer/values/ConsensusType/value` doesn't have `metadata/consenters` field. It seems to be an issue with protobuf decoding because if I fetch application channel config without decoding everything is in place, but `get_channel_config_with_orderer` doesn't allow fetch of the system channel config without decoding. Can anyone comment on this if this is known issue or maybe I'm doing something wrong?