Hi. Maybe I'm blind but I don't see this line in the 1.1 version of the mod. in the Constructor.gd on line 546 I see:
if person.genealogy[temprace] == 0 && rand_range(0,100) <= globals.expansionsettings.secondarybeastracialchance + sametypeweight:
Its in your mod folder right? under directory:
Users\NAME\AppData\Roaming\Strive\mods\AricsExpansion\scripts\characters\constructor.gd
Closest line I can find that matches yours in the constructor.gd is under 406:
#Sibling Match Relatives
if person.npcexpanded.mansionbred == false: