World Download added
I did some more testing and the problem is positional, no directional.
Here is the video http://youtu.be/jz7PSGaT3CM, I also updated the description.
The bow don't reappears because never disappeared (will disappear if you try to use it, will not do anything but never disappear and then reappear, that is another bug, happened to me too), when you have 0 durability (F3+h to see it) and you shot an arrow then durability of the bow will be nil (the damage value should be 385 if we suppose the bow didnt break, but is not, try to give you a bow with damage value of 385 will give you a bow with -1 of durability) and the game doesnt know what to do with that I suppose, that item with will let you duplicate the bows, new ones... in the other bug the item will disappear and then will reappear with the correct damage value (lets say 4 durability and 380 damage value for a bow, it happens often to me too) did you see the difference?
Now if you don't see it try to do this, take a pickaxe with 0 of durability (/give name 278 1 1561 will give you a diamond pickaxe with 0 durability) and try to break a block, will work as intended, try to do the same with a bow and will happen what I show in the video (Please watch it if you didn't).
I'm not saying isn't related, could be, but behaves different, you can't set a ticket as duplicated if the two behaves different... at least I wouldn't with my stuff without testing if they are same situation at least xD
I tested it and only happened with bows... at least check before mark it as duplicated :/, that other bug is the game catching up late and this one give you an infinite item (like the old dupe bugs)...
Watch the video.
Is still a problem in minecraft 1.7.2.