TexturePack / Resource Pack and HorseShadow BUG

• When i change a TexturePack / Resource Pack and restart Minecraft 1.6 with TP/Resource Pack
  It looks like this (watch Pic1)

• And HorseBabys are glitching in the sand and die [2013-06-25_21.09.54.png]
  (and a horse shadow bug with 64p TexturePack watch Pic2)

Hope Mojang u fix this Bugs !!!