(Sorry for my poor English) Sometimes when my duplicants start to do somethings (e.g. building, operating a machine), it will just stand still, with a ready position but doing nothing. The "gun" that they use to work also disappears. I have to force them to move to somewhere else to resolve it, or wait until the rest time come. It happens after the updates on 3rd June 2022. He just keeps this position for a whole day.