First, thank you so much for making one-time passwords visible on the launcher.
But there is still the problem that, when entering OTPs on the Square-Enix website, they are hidden. Because of this, browsers treat them as regular passwords and constantly prompt to save your "new" password, which they shouldn't because, well, they're one-time passwords.
This is literally the only site I've ever visited that has ever treated OTPs this way.