I am consistently getting two Arbane's Sword when playing without the Suna Seni relationship, since she has one and the beefy fighter in her group also has one. Thus, with the relationship not installed, both she and the other fighter drop one each after the between area ambush.
I assume that this is due to the sword being given to the other fighter, so that it can still be found early, if she is not with the ambush crew. Getting two of them, in any event however, seems a bit much. Shouldn't the duplicate Arbane's NOT be given to the other fighter, if Suna Seni is going to participate in the ambush? Also, when you get two, one has the Haste ability and the other is "used", so that one appears to be worth only one GP [although this is fixed by resting of course], but it seems odd that the two identical swords are in different states when you find the two of them....
Also, I assume that the unkillable trolls associated with the Boo quest is a bug? Is it going to be fixed? If it isn't a bug, then I gotta say it is sure no "enhancement". Truth be told, the whole "oops wrong spell" aspect of the mod didn't strike me as an improvement, even if it does allow you to get Flame Tongue and Belm really quick, if you figure out how to avoid the unkillable trolls.