This search finds only terms/string/words that are exactly as present. Then I don't need a search! Absolutely time wasting. PS: Also exact called terms phab:T196820
Topic on Help talk:CirrusSearch
Clearly an exaggerated claim. The issue there seems partly due to mediawiki itself allowing the creation of an intertwiki redirect. This is clearly invalid otherwise anyone viewing that page would automatically be moved to de:wiki. Cirrus seems to depend on valid redirects to store search data.
Removing the invalid redirect will likely fix the problem. Although the issue needs to be fixed in cirrus as well.