It seems it really isn't an issue with the rmg; I generated 15 maps each on 3 different cm-s in SoD and a few more mini-nostalgias, and didn't see any double stables.
On Lite, they were duplicated as early as the second map.
So if Lider1 meant SoD, the explanations could be:
1.Generator error
2.Tourist's error
3.Lider1's error
4.Lider1 was incredibly lucky - he saw something that simply cannot happen :D
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