In my current game, during the fight outside the druid camp, the Goblins missed the three NPS at the gate consistently for three turns. For the first time in multiple playthroughs all three of them survived. In a couple of others they all died, and once Wyll died as well.
Confirmation bias would lead to only looking at the times they all died and think that the odds were always against you, and you wouldn't notice, or at least care to notice when all the dice rolls went in your favour like when everyone survives.
The point is that everytime the outcome is randomised, and people will have a tendency to only notice negative results.
The problem is the probability of missing every attack for several rounds. Either we are not seeing something or there is a bug.
Which for an EA is very very likely. Maybe there is a spell or set of circumstances that cause 80% hit rate drop to 15% without the player ever knowing it.