Sometimes when I'm going by places where there are dead enimies , thier loose weapons are floating to the sky . A giants club or a bandits axe . I can litteraly sit there and wacth it float up and out of view . Anyone else have this happening , anyone know anything about it ?

Yup.

Happened to giant's maces for me, and some random bandit's mace.
Pretty baffling.

I tried shooting the first floating weapon I saw with my bow and arrow haha, no clue if I hit it or not as it did not change course.

Happened to me with the Glenmoril Witches. After looting them, their decapitated corpses were floating a few inches in the air (or standing tip-toed) with their arms spread out, almost as if they had been crucified.

had a shield float up the other day. thought it was just me.