Search results show only generic page labels

[timconrad]

Describe the bug
If I search for a person, say Joswig, I get the result shown with their generic labels, e.g. "Person:161106" instead of the actual label "Michael Joswig".

Expected behavior
The result list should show the actual page labels.

To Reproduce
Use https://portal.mardi4nfdi.de/wiki/Special:Search?search=michael+joswig

[timconrad]

If one searches for items, the expected page titles are shown, though:

https://portal.mardi4nfdi.de/w/index.php?search=michael+joswig&title=Special%3ASearch&profile=advanced&fulltext=1&ns0=1&ns120=1&ns122=1

[physikerwelt]

I think displaytitle is not used by default in the search results https://phabricator.wikimedia.org/T143396, by default the displaytitle can only change case. It is a special config to use that flag to overwrite the title entirely. See https://phabricator.wikimedia.org/T65975 for more details. There is also a hack to solve that.