We're looking into a few cases where mobile live streams appear deleted if metadata (title, description, tags) or change privacy setting (public, unlisted) is edited while processing. It shows: "the video has been removed by the user". Thanks for the reports–updates to follow!
I just hope to see fixes soon on Live Stream feature in general cause it cuts off all my streams beginning or end or both if I do more than 1 hour long live streams and takes a few days for the whole stream to show up....