The following edit attempt on testwiki correctly hashes three of the places where the page title is featured (page_id, page_title, and title) but fails to hash the title in the query string. I'm unsure what the reason is, note that the page is in the main namespace (namespace 0), but is a sub-page of a page that contains ":". Here's the event structure from the Data Lake for this event:
{"action":"edit","http_response_code":200,"is_mobile":false,"namespace":0,"page_id":"d8f76424b2894c33930aef9a1aa76d533656f0ae57cd57defbdb9cd134bfe0c4e2aef7593a4c97efe2deb0f712642848ad2365d39c2c676c7754aa64a879cbf8","page_title":"Editing 735fe8a89bf1780f9a30ffefda587f066e6fbc7748007452e7321b564a52c34c4c878d108f35c644915845e9134f31c5b6d380f58e72413794061ce87fc786ca","path":"/w/index.php","permission_errors":"","query":"title=Wikip%C3%A9dia:Administradores/Pedidos_de_aprova%C3%A7%C3%A3o/!SilentTest/8&action=edit","request_method":"GET","title":"3995795f0b25da2561b8c75c75ba2501f12f35ec2eb54d46b1bda629e3d2f8a3923b31cda8d5058831f4f90e9d7f22fe07d0203410425aac482c88a0a8739c31","user_id":41395}Here's the query to grab the event out of the Data Lake in case more information (e.g. the event capsule) is helpful:
SELECT * FROM editorjourney WHERE year = 2018 AND month = 11 AND day = 12 AND hour = 21 AND wiki = 'testwiki' AND event.user_id = 41395 AND dt = '2018-11-12T21:53:19Z';