No, the official names in Spanish are also Ciutadella and Maó, since 1984. Also, the island of Ibiza is showing the correct names, so the problem is only in Menorca

An important inconsistency is that Ibiza appears to display many official place names correctly, while Menorca does not. For example, Apple Maps shows names in Ibiza according to their official Catalan forms, but in Menorca it still displays outdated or incorrect Spanish forms such as Mahon / Mahón instead of Maó, or Ciudadela instead of Ciutadella de Menorca. This inconsistency suggests that Apple Maps is not applying the same naming criteria across all the Balearic Islands in the Spanish ver.

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My Apple Maps case ID is 102858147264. I spoke with Apple Support by phone about this issue earlier this week.

Got it, FB22734193