Button presses mistrigger with other keys held down.

[n1LS]

The song view (and a few/most others) behave weirdly when key presses overlap.

Steps to reproduce:

• Boot
• Hold down the LEFT
• Press DOWN (cursor moves down one row)
• Release DOWN (cursor moves down one more row) ⚡️

• Boot
• Hold down UP
• Press down right RIGHT (cursor moves to the right by 2 columns) ⚡️

• Load a sone that can play
• Go to the song view
• Press and hold PLAY
• Press down (the song stops) ⚡️
• Press down again (the song plays again) ⚡️

The button handling only checks for the state of the buttons, not for the button that is most currently pressed.