When cropping a 5D virtual stack, the data is kind of lost and all image planes look the same.
To try this you can save the Mitosis Sample as tif and then load it via Bio-Formats Importer, checking the virtual stack option. If you then place a rectangle and apply Image>Crop, the data is gone.
It would be great if this could be fixed, because I think this would be a super useful feature to crop e.g. large SPIM data sets without having them to load into memory.