Afaik, this is working as intended but the way it is worded makes one really think that it gives "Crit. reduction""Sometimes, being a master tinker requires taking risks; yours are more calculated than others.
X cunning, X physical save, X resistance to self-inflicted damage, and X chance to avoid being critically hit."
instead of "Crit. Shrug Off".
You do not actually avoid being critically hit, you just take less damage from it.
There are probably other talents that could need the same clarification... I didn't even know those were 2 completely different things
until hundreds of hours into the game, maybe it's the same for other players