That's right. It's practically impossible to trigger this bug by accident... :) How often do your heroes flee from neutral creatures occupying key positions on the map, and then those neutral creatures are defeated? If you need to flee, then flee to your heart's content – the most important thing is to be able to explain that the goal was to flee and then regroup in another town, and not to weaken the neutral creature in a cheating way... I hope that's not too difficult.
Added 9 minutes later
Have you looked at the first post recently? There were already several lines there. I also added some explanations.