As a main Lawbringer, I experienced this issue several times: I'm not able to counter a guardbreak while I'm dodging. And it happens during side dodge as well as back dodge, which is a bit weird, since it should keep you out of range in order to exactly prevent a guardbreak.
It seems that dodging grants the enemy a free guardbreak on you, and please don't say "git gud" or something like that: I know how to counter a guardbreak, so I had to success in countering it al least one time.
I don't know whether it is an intended mechanic or not, nor it only affects slow character; for sure, I know it is quite annoying, expecially when you try to go away from your enemy and you got free guardbroken.