Compatible with WPML plugin?

I’m positive it’s not “fully” functional with WPML. To be fully functional I would think that when you duplicate a post then all “other language” posts would also be created and connected to that duplicated post. But, that definitely does not happen.

You should be able to still just duplicate the “main language” post/page and then manually add the other language versions. But, I haven’t tested this out so you’d just have to give it a try and see what works.