This is actually not a bug. I ran 100 unconditional realizations over a
grid of size 150 by 150, same size as the training image. The value range
from TI is 0 to 0.53. The value range of the etype over 100 realizations is
0.26 to 0.33, close to the mean value 0.28 from TI. The structures shown in
the etype is just the detailed information within a small range. Those
structures disappear when set the color bar range same as the TI. The etype
value range will be even smaller with more realizations.