If start_date is in the past, scheduled Airflow DAG runs immediately after initial manual pipeline run
The DAG's start_date is set to the extractor's start date, while it should just be set to the timestamp of pipeline creation, so that the first schedule run won't come until the next day (or hour, etc).
Right now though, the pipeline's start_date is used in the UI where really the extractor's start_date should be used.