There is currently a 0.1s window of time at the end of the hack where it cannot be canceled via line of sight or other effects (such as Tracer’s recall, Zarya bubbles, etc). This exists so it doesn’t constantly get broken by very small line of sight blockers such as light posts and signs, etc. We are removing this window and instead now using multiple LOS checks to make sure the small LOS blockers are still not a problem. In addition to this, we’re speeding up the update rate of her hacking so that it is more responsive in checking for these fail conditions. The combination of these things means it should be much more reasonable to respond to a hack targeting you.