What’s wrong with my four-wheel??

Hei, today I had the pleasure of driving my ranger “right” test, 40cm of fresh snow and on the other side of the garden is the stallion. So pure into the ranger and go. Man does the fun, but when the stallion was on it, empty with 125kg of own weight the car started to get problems in advance driving. Mhhhm Allrad was in and Low, should be no problem. After I got out and ran around the car I see the front left of the tire engulfed. Is the Nor Shouldn’t a “all-wheel” turn with “all-rows”?? So what’s broken??