For example see:
https://meta.wikimedia.org/wiki/Special:ApiSandbox#action=centralnoticequerycampaign&format=json&campaign=Trademark%20policy%20discussion
Expected: it should find the campaign called "Trademark policy discussion" [https://meta.wikimedia.org/w/index.php?title=Special:CentralNotice&method=listNoticeDetail¬ice=Trademark+policy+discussion]
Actual result: it only looks for the first word, "Trademark"
It does not seem to work with underscores ('_'), pluses ('+'), minuses/en-dashes ('-') or spaces (' '/'%20').
Version: unspecified
Severity: normal