I don't remember if I was on the farm or on a raid, but I probably did click outside the game before it happened.
Thanks, that detail helps. Clicking outside the game frame moves keyboard focus to the itch page, and SEEDLIFT has no code that takes focus back, so that fits what you saw. We've added it to the bug report. Until it's fixed, try clicking on the game once. If the keys still do nothing, a reload brings them back and CONTINUE picks up your farm where you left it.