In fn handle_key_events (here), the event.kind is not checked with keyboard input.

I think this event is created when pressing and releasing a key, so every key is reacted to twice. Trying to select using enter selects and then unselects, or using arrow keys moves 2 items at a time.

This is on Windows, but looking at the crossterm docs, the event kind needs to be opted-in for unix systems so it might not happen for you.