Why would you kill the horse in the first place? They are not hostile!
This bug is still in affect for 14w19a.
Also happens when entering the nether.
Yes, I have noticed this as well. Sometimes it works, but usualy does not.
The explanation is simple, in reasourse packs, entity textures are stretched out, you are using a skin that is from your reasource pack, because in 14w03a, they redid how skins work, making them 64x64 but in 1.7(and your reasource pack) skins were 64x32, so, your kin is being stretched out from 64x32->64x64.
Just run your skin through this: http://www.reddit.com/r/Minecraft/comments/1vl7p7/releaseskin_converter/
Hope this helped 🙂
The same goes for arrows, withers, and wither head projectiles, I don't know if this is a bug, but I believe it is. Just out of curiosity, is the dragon, as well as the border in the End, or Earth?
What enchant did you use?
What type of pickaxe did you use?
What damage was the anvil at?
Where did you get the enchanted book? (Enchantment table, dungeon, stronghold, est.)
Oh, I looked but I couldn't find it already reported, I'm sorry.
Yes, the same is with any block without the regular cube model; torch, flower pot, redstone, repeater, etc, with the exception of anvils.