A devastating bug that I haven't seen listed as being worked on for next patch is in the Road to Independence campaign.

Apporixmately 99.9% of the time when giving my units orders to move Big fat Al ( from southpark ) gives the order 'maaarrrch', yet it's common knowledge that he was a boy scout troop leader not a revolutionary war hero! Splitting the difference I'd be ok with him giving the march order for rangers but all units? I don't think so.

Full disclosure, I was kicked out of boyscouts so perhaps it's a more irritating bug for me.