I had this twice happening to me, once in battlegrounds vs a special 1 from taskmaster and then in the new side quest vs Joe fixits special 2. I DOGDED the attack, got the animation and the dexterity text and buff, but I also to damage from the attack, whilst being "untouched" from the attack, so no recovering from being hit. Also some of the specials from other champions are off since the last update. I haven't been able to dex a sp1 from thing for example, it always gets me. Also I can't punish Rhino after dexing his special 1, no matter how good I time it, he always is in block when I hit him, or he is intercepting me. I don't think this is a skill issue, these are all things that were easy before the last update.
I created a thread in the bugs and known issues channel:
https://forums.playcontestofchampions.com/en/discussion/327817/taking-damage-while-dodging-an-attack#latest