I think they must have recently changed playback sync to be cloud-first, as jumping back 10s in a video has recently been badly glitching for me both in Chrome and on the iPad app. Often jumps back 20 mins to the start of a video, or where a prior session’s playback had been saved, thereby losing progress you’d made. Not the end of the world but frustrating when you’re watching a lecture and want to catch a detail you just missed. Really breaks continuity.

I’m sure maybe it consolidates implementation making each client simpler and probably satisfies a couple buzzword checkboxes from the business side but why would I possibly trust picking up playback across devices when I can’t trust it on one?