Topic on Extension talk:Display Title

Not an issue.

Is it possible to also use the DisplayTitle in search results?

I think that used to just work, IIRC. I take it from your question that it does not work (anymore)? Is this with the built-in search or CirrusSearch or something else?

Sorry it works with no extension as well as with Cirrus Search. I just did not install DisplayTitle correctly in the first place.

That's good news!