Bug report for version 5, wearing a HAT (by placing in the inventary) and taking it off (by placing it in your hands) destroys the hat, tested with the Top hat and the Plumber's hat.
When milking cows, if you have more than one bot milking, and they get in each other's way one of them skips a instruction and gets stuck.
Maybe a repeat until bucket full / bucket empty?
Every once in a while bots that are feeding folk will attempt to feed the same target, as a result dropping food on the ground.