When a dupe 'sneezes' or coughs, the 'To do' list is reset. This even happens when the dupe is on their way to get food. The list will reset and the eating chore disappears. This even occurs when they are eating and haven't completed the eating animation. This leading to very frequent starvation alerts.
I think that they should 'remember' what they were doing when they sneeze, and continue, if available.
You can play the attached save. Mi-Ma is currently having this issue the most frequently at this point in the save.