Yesterday, contact was lost with SpaceX's Starship as it attempted to re-enter the atmosphere. One of things it tested was the payload bay door. In this video, at nine minutes and eleven seconds (T+ 30:18), the door seems to jolt backwards into the payload bay. I couldn't find any video or other indication that it had latched correctly. Scott Manley (in the video) offers the opinion that the door 'failed' but nothing further.
Has SpaceX said, or is there any other suggestion, that the payload bay door was open when Starship began to enter the atmosphere?