Translating "Plants in space" from English to Spanish I selected the "EEI" text (Spanish initials for the International Space Station, ISS in English) and I got two link cards: (a) one pointing to the International Space Station article in Spanish ("Estación Espacial Internacional") as the target card, and another one pointing to the "Edison Electric Institute" in English as the source card.
I'd expect the source card to point to the International Space Station article in English which is the equivalent article in English according to Wikidata.
When fixing this, it would be great to create a specific test case to avoid regressions, since I think this seems an issue we already fixed in the past.