A couple bugs I've noticed.
Sometimes, not always, but when using the conveyor belt baggage loader, when the carts come back, some of the carts are invisible. When they get ready to load the bags the bags magically appear. The actual cart doesn't though.
Also on the cargo loaders on larger aircraft, sometimes the pallet will go on the vehicle fine, but when it tries to raise the bag, the thing it was on(Can't remember the name) raises but the pallet stays on the ground. It animates just like it would if it were raised, in terms of turning and going into the cargo hold, but it stays on the ground.