This bug occurs in SOD and even in single-player games against AI.
It happened to me more than once.
The last time was in March, in a game with scorp.
I made a save, but I can't find it...
Of course, there's no question of accessing memory or anything like that during the game.
Charity suffereth long, and is kind; charity envieth not; charity vaunteth not itself, is not puffed up,
Doth not behave itself unseemly, seeketh not her own, is not easily provoked, thinketh no evil;
Rejoiceth not in iniquity, but rejoiceth in the truth;
Beareth all things, believeth all things, hopeth all things, endureth all things. Charity never faileth...