The iPad’s split keyboard has phantom buttons

The iPad's split keyboard
If you want to make it easier to reach all keys while typing with two hands in portrait mode, but you’re used to typing Y with your left hand, you can.

To enable this keyboard, tap-hold on the “toggle keyboard” button in the lower right to get a menu, or tap-hold on it and drag upwards. Reverse that to reunite the two halves back to normal at the bottom.