For a couple weeks now playback on Safari would just stop every few minutes and reset the playback position. Sometimes it would mark the media as played, sometimes unplayed - I couldn't detect a pattern. Same behavior in beta and stable. It didn't happen in Firefox so I assumed safari was the problem. Discovered playback in a Safari "Private Window" worked so I thought okay state must be corrupted. Deleted cookies, local storage - nothing made a difference. Digging