This really doesn't work. I have a key in the String Catalog -> doesn't work for a push notification. I add a temporary Localizable.strings file with the same key, it works immediately. Everything else in the app works from the String Catalog. Sounds like a bug.

Same here. What is going on, all I did was move all the keys in a String Catalog. Everything works OK in the app, all languages are good, but in the Push Notifications I see the key, it's not translated. This is a big issue.