Just had a very apparent and repeatable bug with a ridiculous AI cursing my city with negative INI and thus the Archers actually landing at a sum of -1 Initiative (the penalty was listed as city which was obviously the -initiative curse).
The unexpected result: Endless turns for my archers (and thus a very dead superior AI force) multiple battles / repeatable (in another city without the curse militia behaved normally). Seems like a gamebraker to me given how curse-happy the AI is at riddiculous...