I figured out how it works. When a player has the maximum amount of food/water/air, he can still try to take more. The action will be completed, let's say, at 95 percent, and next time there will be those five percent left, which will allow the action to be completed almost instantly. So it's not a bug.
Second time I can't leave Talos with rover. averyraine already reported this problem. https://ctxt.io/2/AAB4wYN5Eg