At some point while playing Byzantine (since 857) - Around 1104 / but I cannot see when exactly / under which specific circumstances - a heir succeeded but without following Primogeniture, which is always there from the beginning when playing Byzantine. And I could not go back to it, because it said Byzantine had yet to "discover it" --- See attached.
And I did *not* change it. But somehow if defaulted back to "Partition" -out of the blue.
And I did *not* change it. But somehow if defaulted back to "Partition" -out of the blue.