Suicide movements of units

[greekdim]

Sorry if it is already mentioned before but I decided to play after a long time of inactivity and I found a real annoying issue. Game sandbox, scenery CW no units at the start hard military difficulty. Many times during a battle enemy units engaged in battle pass literally through my units in a kamikaze style just to occupy the land behind my units. North Korea declared war to South Korea just having 5-6 units.I gave them one tank and one mechanic infantry units. These units started to fight then suddenly after some seconds both of them passed through all the garrison units of seoul and adjacent cities and stopped to chongju! It looks like that the main priority of AI units is to occupy land by any means. I don't know if an option or something else caused this or it is an unfixed bug. I don't recall similar behaviour in older versions...