When diskdrake is opened from a root command line, the window size is smaller than it is when it is opened from MCC.  However, the partition icons are not resized accordingly.  In my case, the last partition is simply not displayed and no indication is given that there even is another partition.

I'll attach screenshots of the opening window that excludes the rightmost partition and a fullscreen version of the same window that does.

If it is pertinent, the excluded partition is out of order; it is /dev/sda8 and /dev/sda9 and /dev/sda10 precede it on the disk.