[Ken Case]

Actually, the new behavior is intentional; here is the relevant release note from May 20:

The name of a built-in perspective is now based on your current localization rather than being a persistent, customizable setting. (You can always copy these built-in perspectives to your own perspectives and give your other copies different names.) This means that people who first created their database in one language but then switched to another won't wonder why half of their toolbar is still in the original language.

We do want built-in perspectives to always use their original name (presented in the user's current language). But you can always make your own copies of those perspectives and change the names of your copies.

(I would call it a bug that built-in perspectives temporarily accept a different name before reverting back to their original name.)