Currently the items in the watch list are limited to a certain amount. If you get to the end, you are done. For more experienced users with bigger watch lists, the initial view often covers just minutes or an hour.
Not really sufficient. This is aggravated by the behavior due to bug 68367
Version: unspecified
Severity: normal
See Also:
https://bugzilla.wikimedia.org/show_bug.cgi?id=68367
https://bugzilla.wikimedia.org/show_bug.cgi?id=68369