There are some instances in the game where there is a kind of "cinematic" that lasts a few seconds. During these, it is not possible to do anything, including changing your cursor, so maybe it was just one of these that was playing? I was considering changing the cursor to an hourglass to indicate that you are currently unable to take any actions, but ended up not bothering. And perhaps I should make the "cinematics" slightly more flashy. I'm guessing they can be hard to notice unless you actually know where to look. 😅