Code review is crucial in software engineering for maintaining quality and collaboration.Many industrial Merge Request (MR) workflows deviate from standard review processes, with a significant percentage serving non-review purposes.Identified seven categories of deviations in MRs, occurring in 37.02% of cases, and proposed a few-shot learning detection method with 91% accuracy.Excluding deviations improves ML models predicting review completion time, enhancing performance and shifting feature importance significantly.