At first this is what I suspected but if you look into it more, basically the entire Church support Patriarch Kirill. They were given the jurisdiction of Ukraine hundreds of years ago. Also if you look into the persons involved in Ukraine, one is a typical Orthodox Christian, the other is a highly political and divisive figure (Filaret being the leader of the movement and Epiphanius being his protege). Then there’s also the fact that Bartholomew is among the most liberal in the Church, won’t even speak against abortion or much other than the environment in certain terms. Coming from someone who is in a church based on the idea that he is merely the first among equals, he’s standing on some pretty soft sand.