Filter / Finding internal posts

Could you explain what is going on ? or what is not going on ?

What steps do you execute ?

I’ve typed different keywords in the filter input text area to find posts, but the result was nothing

Screenshot: https://abload.de/img/bildschirmfoto2014-11znj29.png

Sure of the letter case ?
Could you provide a title of a post which should match ? (screenshot ?)

Maybe this screencast helps better than screenshots: https://youtu.be/6Zu5QvZK1Uw

Type “Crazy” and not “crazy” ??

The letter case is important (perhaps it could be improved but this si the case now)

That works! Merci beaucoup ??