Arrow keys don't trigger any key event when input mode is set to game + ui (or just ui)

thank you again, I really believe this could be a solution.

however, being mostly a 3d artists who took a while to learn blueprint, I have absolutely 0 experience with C++ or how to implement it in unreal. I literally don’t know where I should put this code, or what to change if I had to change anything.

perhaps you could point me directions to figure this out?