Contradictory traits: is this a bug?

In my Epeiros campaign, one of my FM:s have both the trait Poor Tactician and Understanding of Strategy. Is this supposed to be possible? Could it be that Poor Tactician comes from the fact that he has no battle experience while Understanding of Strategy is a trait that helps him become a better tactician more easily, or is this simply a bug?

https://i571.photobucket.com/albums/...torytraits.jpg

I'm pretty sure the Strategist and Tactician trait lines are separate.

I suspected that. Thanks