I know very well that the marker jumps many lines...

However, that's not the only problem I have with EB, while Vanilla Rome was totally reliable. Sometimes game suddenly crashes (and yesterday, after just entered in game and scrolled the campaign map for two seconds, my computer rebooted and Windows said "the computer has been restarted after a serious error" O.O) and some units don't have a portrait in the selection list. So I'm going to try to reinstall EB, maybe the setup just went bad the first time.