Running pretty well so far, noticed a few bugs that have to do with saving/reloading but nothing serious until this-

Cesara (sp), the turn after meeting me, DOWs. She moves 2 armies to a single tile adjacent to my little-defended capital. During my turn, I cast Pillar of Fire on the tile, then her main force attacks and is defeated by my garrison + champion. Her sovereign retreats, then I get a message saying my city is under attack  (from the second stack) but battle does not initiate. My turn starts, and I can move troops etc but I cannot enter combat, and hitting the end turn button does nothing other than black it out.

I don't think the Pillar of Fire spell is causing the bug (likely either the successive battles or the battle after the sovereign retreats message causes it) but I can't test it because I lose the first battle if I don't cast the spell.