I am pretty sure its been reported before but this is a really annoying bug. If you seduce a commander they may flee into a friendly ocean. Thats what just happened to me.
But The seducer drowned instantly and the seduced stayed to fight a battle then drowned.Really weird. What caused that? Is there mutiple times in a turn that units are checked for drowning?
Here is a pic. The commander has no water breathing items or abilities.
