Dux gets 'Hog rushed' with activated 'Chameleon' (by "Panzer")

I noticed several times that Dux get ‘Hog rushed’ by that “Panzer”/“Tank” kind of Ghoul even with activated Chameleon skill. My Bormin got ‘Hog rused’ thrugh a massive house wall, hiding there.

Is it possible that “Panzer”/“Tank” Ghouls have no fog of war so they see everything with or withour line of sight?