Journey planner on kvb-koeln.de does not work in WebEngine.
To reproduce an example:
1. Visit http://www.kvb-koeln.de/ in qutebrowser with --backend webengine or in qupzilla
2. On the right hand side, in the field marked "Startort", type "hbf" and wait.
Expected behaviour: A menu should appear suggesting "Dom / Hbf, Köln-Innenstadt" as well as other locations. This is the behaviour in other browsers.
Behaviour in QtWebEngine: Nothing happens. The field stays as it is, no dropdown menu appears.
This makes planning journeys in this area impossible using a webengine browser.