We are not sure, no. But the evidence is stacking up, with games that would previously CTD now resolving ok when the PostBattle trait triggers are removed.

As for your specific issue, I'm glad you aren't affect by this issue. It would be useful if we could understand why though. Perhaps you fight battles in a different way from everyone else? For example, what result do you often get from your battles (e.g. clear or crushing), do you fight with your general's unit, etc.?