Topic on Extension talk:NoTitle

Hmm, perhaps the HideTitle extension provides a way out.

That one requires the whole BlueSpice framework. If you run usual MediaWiki, this does not seem to be a way out. :(

Fortunatelly, this works in 1.29:

$wgRestrictDisplayTitle = false; (in LocalSettings)

and then use {{DISPLAYTITLE:new title}} on any page