If a user checks the 'Keep me logged in' box when logging in, it only does so for a finite amount of time, about a month by default. The label does not reflect this - by not specifying any time period, the expectation is that the login will last indefinitely, which is simply not the case and has already led to some confusion amongst users.
While the English Wikipedia modified their own interface message to specify the time period, that clarification should be added to core.
Version: 1.23.0
Severity: enhancement
See Also:
https://bugzilla.wikimedia.org/show_bug.cgi?id=47694