Steps to Reproduce:
- Turn on "Live updates" in the Watchlist.
- View some unviewed pages in adjacent tabs.
- Wait for some time but not until a new change appears.
Nothing changes. As a result, after some time, one can forget if they have viewed the pages or not. and view them again.
The viewed pages are un-bolded.
Also, if the displaying of my changes is turned off in the Watchlist settings, it is expected that pages that I've viewed and edited disappear.