Common UI Input ignores Arrow Keys

Hello everyone,

I’m currently working on a 5.6.1 project using Common UI.
The problem is, whenever I move the mouse, the arrow keys to navigate my widget while in keyboard and mouse mode, are ignored. I know the developers said that this was intentional, but I’m trying to bypass this. Is there any way I could do that?
I tried everything in my book, including a Udemy tutorial where the teacher keeps ghosting my questions, I’m desperate.

Edit: I’m using C++ as well as Blueprints, so any workaround using C++ is more than welcome!