Can't change language (engine issue)

When I press language button, it don’t work by some reason. In my previous game on UE4 it was all exactly the same and it worked but in UE5 it don’t.

I can’t change loading policy to Always in UE5.

So when I try to change loading policy from newer to another value, I can’t do it by some reason. And I can’t understand why.

After some time of research I can say that this thing is totally broken. I have create a new project and there I could change loading policy. After switching back to my project I could do it too, but after some time it was set to Newer again and I can’t change it.

Also it create duplicates in config files

Aside of all forementioned possibilites, I’d strongly suggest checking the plugins. First candidates would by any plugin that might be connected to localized content — quest systems, dialogue systems. In my case (same issue — Localization policy dead-set to “Never”) it was GameFlow plugin I wasn’t using.