When a switch would show a on screen keyboard yuzu does not ( but keyboard input works)
How does yuzu prevent the on screen keyboard appearing and/or prevent a crash when the game calls it
In order for us to provide better support, we need to see the log generated by yuzu. This guide will walk you through how you can obtain the log file: Getting Log Files - yuzu
My guess is that the fullscreen mode needs to be switched. Go to Emulation > Configure > Graphics, and change it to the other option, see if it helps.