I have jumped on the beta starting from beta 5, now on beta 6, on my Series 10 watch.
I have noticed the following behavior with notifications. Let's assume I get a few notifications and don't check them. Then I swipe down on the watch, quickly glance at them, and leave them there. All good.
Then at some point I scroll through those same notifications on my iPhone (without interacting with them, just looking at them), unlock the iPhone, use it a bit, put it back.
After that, at some point most of the notifications will disappear from the watch. If I swipe down on the watch, only the latest notification will still be there. The older ones get cleared (although they're still there on the iPhone).
Is this a new behavior (that "seen" notifications disappear), or should this be considered a bug? Anyone else experiencing this?
Edit: feedback submitted as FB19558404