English has a similar confusion with the word hotel. A loan-word from French, the correct indefinite article is counterintuitive. An hotel, a house.
ADDED: You do see a remnant of this with "an historical" but even that is generally not preferred in most dialects. https://www.alphadictionary.com/articles/drgw007.html Basically, it has to do with whether the initial "h" is pronounced in a given dialect of English.