This isn't a huge issue, and it obviously doesn't affect gameplay in any way, but I feel I need to adress it.
Stop using the "Randomize Minerals" option on your personal editor. This is certainly faster and easier, but it's not very efficient. I'm just a little tired of seeing four of the same mineral in a line, it doesn't look very professional (Take a look at Sattarchasm's bottom right main to see what I'm talking about) If you want to make your minerals random, then just place them manually (it's not that hard).
lol, arden
sry, but you have no clue. learn a bit about probability and stochastics, really.
your "bug" is what really makes it random, and not schematic. besides, in an 8-mineral base, the probability of having 8 blocks the same is 1/(3^7), which is an extremly small probability. putting them manually "random" would result in structured, and NOT random builds.