I think there is a problem with MessageFormat and languages with more or less plurals than English

Continuing the discussion from Message Format support for localization:

I ran into issues testing my text with MessageFormat in different languages, because it didn’t work in Polish.

But after looking at an existing text, I think the error isn’t on my end, but rather that something isn’t working as expected.

The example I looked at is in the invite modal: js.user.invited.invite.link_validity_MF

In English, everything is fine:

It also works in German:

But it doesn’t work in Polish:

And it doesn’t work in Chinese:

Based on the documentation topic, I would expect all these translations to work, not only the German translation. So, I assume there is a bug somewhere that affects languages that have a different number of plurals than English.