We are conducting a simulation study to compare various clustering methods. However, the implementation of one of the methods used in the study (Mclust) occasionally produces empty clusters, which is not allowed in our study. We only use R in the study. Unfortunately, reimplementing the methods is not a feasible option. However, we don't want to exclude this method from the study.
How should we mention that "we know it occasionally does not work the way we want, but we still want to include it in this section"?