Inconsistent Data After Refresh - Merge Query Issue (?)

Hi. I am encountering exactly the same issue as described here. It was driving me crazy but good to read that I'm not the only one... I can try to remove all surrogate keys (index columns) and just link the Facts and Dims based on concatenated fields now, but that's not ideal and takes a lot of work. I am curious if anyone know whether this is a bug or not? And if anyone knows how to fix this? Maybe ImkeF , marcofalzone ?