It only does it if I move and attack in the same motion. If I am out of melee and move into melee and attack at the same time I get interrupted. Level 2 enemies. Definitely not sentinel. If I move first and then attack once positioned, it doesn't happen. Even if a pre-emptive reaction was normal, it shouldn't steal my action.
Ah, good spot check ! Hope Larian read this.
Note to self then : Move then attack. It is how I do most times anyhow.
