Hetairoi Aspidophoroi graphical glitch

[Basileus Seleukeia]

Fighting a tense battle between my Epeirotean force and the Makedonian army, I noticed that their Hetairoi Aspidophoroi have a weird triangle shaped glitch in their skin. It is so thin that it can only be seen from the front, but it is there. I don't have screenshots of this, as I have currently no Fraps on my gaming pc.

Edit: Oh, and I totally freaking love this unit! They have the same staying power in melee as the Lonchoporoi, but also a totally awesome Javelin attack! I don't miss the lonchos, because the charge is not that important if you can soften the enemies up by throwing spears in their back!