I experienced shorter tees in a tourney that I played today, this week's free multiround open at KIA. Alas, this happens on purpose for variation of the tourneys.
In private rounds or CC tourneys it should not happen.
A fact that happens all the time, though, is playing length differing from the scorecard on Par 4s and Par 5s due to the different pin positions. We have discussed this for OAK and STA more than once.
KIA #9 has a new pin position in the back left, it might play quite a few yards longer than the first one close to green start. Won't check it out, but you'll see the real pin distance from the tee when hovering over the blue dot (you) on the overview down right.
Edit: On the scorecards, the length to one pin position is given. When the other pin is used, scorecard length is not changed.