Can tires be off ground on auto leveling system?

Does anyone have any real experience or first hand knowledge of jack arms bending by having the wheels off the ground under normal camping circumstances? I've never heard of one. I know I have seen hundreds of various RV's with wheels in the air while camping. I don't recall any of them having an issue. My FW is far more stable on 6 jacks if I put the whole thing in the air than just the tires.