ImageCropper bounding object is not displayed with some 4D dataset. The problem comes from the line
size[i] = (aGeometry3D->GetExtentInMM(i)/2.0) - 1;
in mitkBoundingObject.cpp. The size[i] will be negative if the extent in mm / 2.0 is < 1.0. Removing the - 1 solves the issue.