Reproducible, kind of.
The answer seems to heavily depend on the wording. I used DeepL to translate the question in the initial report into Romanian:
If a boat crosses the Atlantic in 12 days, how many days would 12 boats take to cross the Atlantic?
-> Dacă o barcă traversează Atlanticul în 12 zile, în câte zile ar traversa Atlanticul 12 bărci?
This results in the expected answer of 12 days:
While testing, I noticed the Finnish question Jos laiva ylittää Atlantin 12 päivässä, kuinka monta päivää Atlantin ylittäminen kestäisi 12 laivalta?
results in 144 days
Same for the Czech question Pokud loď přepluje Atlantik za 12 dní, kolik dní by trvalo 12 lodím přeplout Atlantik?