duplication bug with my motor bike

[Uncooked raviolis]

When i park my motor bike, it's start to did damage to the sand and dig it, so it's destroy 3 or 4 block so i take the motor bike in my inventory! BUT when i put it on the ground 2 motor bike apped with the same fuel and damage :/

[Ironklaus]

i cant put up my m.bike for a long time , then one day "E" works again, but i get can put up 2 of my bikes ....:)

[Vod]

I accidently duped my bike, minibike, and motorcycle. I attempted to dupe my 4x4 but it didn't work. All of the bikes duped while placing, I think if you can make it bounce as you place it, or drop it on the grass and it places it above the grass instead, it will make a copy.