81.129.155.48
Fragment of a discussion from User talk:Rua
They're adding a long vowel in places where a long vowel could not exist. Latin always shortened long vowels before n + consonant. You can see this also before the 3rd person plural ending -nt. {{la-IPA}} also shows a short vowel. It's only long phonetically, because the following n disappears in speech, but this is not indicated in writing.