Please provide option to stop refreshing dataset after refreshing manually... If there are any performance issues in database this would lock down the table... I even observed that reports doesnt ...
Not ideal, but I was able to work around this limitation by restarting the on premises gateway service on the server where it is installed. Stopping the service killed an endless data refresh for me. If you have access and you are okay to kill any other open gateway connections, this could be a workaround until the "kill refresh" feature is built into Power BI online.
