I am facing the same problem.
Can confirm that only input 1 works regardless of language. And that keyboard shortcuts with Super work regardless.
Here is my extra 2 cents:
When I go into 'Show keyboard layout' to see which keypresses are registered, the left super key is not registered but the right one is.
One more thing: if I change the activities overview to be triggered by the right super key instead of left (via gnome-tweaks), then the left super key will be registered but the right super key will not.
I am facing the same problem.
Can confirm that only input 1 works regardless of language. And that keyboard shortcuts with Super work regardless.
Here is my extra 2 cents:
When I go into 'Show keyboard layout' to see which keypresses are registered, the left super key is not registered but the right one is.
One more thing: if I change the activities overview to be triggered by the right super key instead of left (via gnome-tweaks), then the left super key will be registered but the right super key will not.