I have the same thing, but I think it is because prior to the last update your planes landing lights wouldn't reflect on the ground in some areas around the north side of the airport. After Umberto raised the land so to speak, in that area, the landing lights of your aircraft now reflect on the ground at night, but we have the small speed bump.
I usually only fly the LDS767 into/out of KDFW and when I taxi over that spot slowly it just makes a small crash noise, but if I taxi over it quickly it will smoke the tires like I am landing.
Either way if it can't be fixed I can live with it. I just think of it being ground under repair, lol. However in the LDS 767 it hasn't caused any stall warnings to go off.