Confirmed. Was just getting to a stopping point and this seems worth jumping on so I'm taking it.

Renaming to reflect that it will suggest a title if there are no redirects that also match.

Change 124344 had a related patch set uploaded by Manybubbles:
Prefer title for prefix search match

https://gerrit.wikimedia.org/r/124344

Change 124344 merged by jenkins-bot:
Prefer title for prefix search match

https://gerrit.wikimedia.org/r/124344

Change 125395 had a related patch set uploaded by Manybubbles:
Prefer title for prefix search match

https://gerrit.wikimedia.org/r/125395

Silly bot, bug is fixed, this is just the backport to get the fix deployed early.

Change 125395 merged by jenkins-bot:
Prefer title for prefix search match

https://gerrit.wikimedia.org/r/125395

Users keep complaining about this error ("it's going on since months ago"), but I can't reproduce it any longer. I'm asking more examples.
https://it.wikipedia.org/w/index.php?title=Discussioni_progetto%3ACinema&diff=65431950&oldid=65426509

Thanks! Its been long enough that all the caches should have expired....

The last reporter confirmed the error is gone after a purge.

That is good. I wonder why they had to purge, though. I just confirmed that the cache time is six hours. The most I believe its ever been is a day.