Last night I noticed 2 strange things, probably bugs.

1. Arche Seleukeia: The three client rulers in Asaak, Babylon and Kartakakophoniawhatever are - as it seems - not client rulers at all. They are mobile and get the Interloper trait as soon as you finish turn 1.

2. Epeiros: When attacking Pella in turn 1 using the elephant, said animal is ramming the gate not with his forehead but with his backside. Works perfectly but looks odd.
Just in case this wasn't intentional I've done my civic duty and reported it.