sync_modes not populated after call to streams.get_stream_properties

[romain-fitcollective]

When calling directly the API

curl --request GET \
     --url 'https://api.airbyte.com/v1/streams?sourceId=03604837-98e**********8b8c7e4a&destinationId=d89fd9a*********6d6-85c8-ddc30e7a85ec' \
     --header 'accept: application/json' \
     --header 'authorization: Bearer eyJhbGciOiJSUzI1NiIsInR5cC **************FnxpQVDlmiwxee0PpoSQ'

it nicely returns sync_modes info:

[
  {
    "streamName": "abandoned_checkouts",
    "syncModes": [
      "full_refresh_append",
      "full_refresh_overwrite",
      "incremental_append"
    ],
    "defaultCursorField": [
      "updated_at"
    ],
    "sour ..."

However, when using the python SDK

res_sp = s.streams.get_stream_properties(request=api.GetStreamPropertiesRequest(
            source_id=source_id,
        ))

the sync_modes are always returned as None for all streams