Take any article long enough to notice the effect (i.e. Cake on en.wp).
Delete any of the pics at the bottom of the article.
Notice the focus jumps back at the top.
Version: unspecified
Severity: normal
See Also:
https://bugzilla.wikimedia.org/show_bug.cgi?id=58038
https://bugzilla.wikimedia.org/show_bug.cgi?id=68589