The very first question's "accepted answer" is a red flag for me: the person obviously does not have time to debug the code. Inconsistent times are the logical necessity: the candidate will switch between exploration/learning, debugging, prototyping, and writing the actual production code, and the proportion of the time spent in each activity is dependent on the stage the project is in. If there is a tough bug reported by a user, I spend zero time coding; I spend time debugging (adding debug prints does not count as coding).