For some people in some browser combinations, search autocompletion seems to be stuck in its April 30 state (ie. articles created after that date are not suggested). An example is the search string `Révai Le` not resulting in a suggestion for [[https://hu.wikipedia.org/wiki/R%C3%A9vai_Le%C3%B3|hu:Révai Leó]]. More examples and personal experiences can be found [[https://hu.wikipedia.org/wiki/Wikip%C3%A9dia:Kocsmafal_(m%C5%B1szaki)#A_keres%C5%91motor_gyeng%C3%A9lkedik?|here]] ([[https://hu.wikipedia.org/w/index.php?title=Wikip%C3%A9dia:Kocsmafal_(m%C5%B1szaki)&oldid=22644226#A_keres%C5%91motor_gyeng%C3%A9lkedik?|permalink]]). I don't know for sure if this is a huwiki-specific problem, but [[https://en.wikipedia.org/wiki/Wikipedia:Village_pump_(technical)#Possible_issues_with_search_function|this enwiki report]] ([[https://en.wikipedia.org/w/index.php?title=Wikipedia:Village_pump_(technical)&oldid=957499218#Possible_issues_with_search_function|permalink]]) seems to be about the same issue.
There seems to be very little logic in when the issue happens - for example, I can reproduce it with my WMF account but not with my personal account. Same browser, same IP, same search-related user preferences, disabling browser cache makes no difference... also if I directly request the API URL used by the search autocompletion JS code ([[https://hu.wikipedia.org/w/api.php?action=opensearch&format=json&formatversion=2&search=R%C3%A9vai%20Le&namespace=&limit=10|this]] for the example above) it gives the correct result for all browsers. Maybe there is some kind of userid- or session-based load balancing involved, and some of the cache servers are corrupted?