Hey C-Beats,
So the issue is the entire on-screen keyboard layout has changed with the UI update on 12.14.
When going to 'Search' within a specific platform the on-screen keyboard turns into what looks like a touch specific keyboard, and does not respond to any controller input. Moving it back to 12.12 gave the previous on-screen keyboard which was much more compact and usable via controller.
The controller I'm using is an Xbox One controller, and setting the "Use All Game Controllers" to on or off has no change with the on-screen keyboard that is displayed or its functionality. Here's attached screenshots to show the difference.