In version 2018.1 there was a known issue with the profile visualization for numeric data (y-axis wasn't in order). When that issue occurred, there was also a change to the box & whisker plot.
It used to be that the B&W plot was based on the Mean, but when the issue occurred it was replace with the Median.
It appears that the y-axis order issue has been fixed, however the B&W plot is still based on the Median. Since a B&W plot is always the same for a Median perspective (the Median is ALWAYS in the middle), a plot based on the Mean is much more informative of what the data looks like.
It would be great if the profiling visualization could be reverted back to using the Mean instead of the Median.