Is there any way to disable the on-screen keyboard for XCom2? It breaks text input for the game.

In xcom2 (WotC) you can create custom posters and write slogans for them, however, if you are using big picture mode, you are unable to type at all, even with a physical keyboard.

Big picture mode's keyboard UI completely takes over the screen and blocks all input through to the game itself. I can type and type but nothing ever gets entered into the game, even after pressing done.

It even stops you from being able to use a real keyboard to type...