We've been having some troubles with using the up/down arrows to change slides since upgrading to version 3.0.x on MacOS.
Expected behaviour: in a song, pressing the down arrow on the keyboard selects the next verse and displays that verse on the projector/second screen.
What happens: in a song, pressing the down arrow selects the next verse in the Live pane, but the first verse remains on the projector screen.
This is a regular, but intermittent fault. I think if I go open the Settings dialog sometimes the keyboard begins working as expected.