Horse and Clay disappearing

what kind of clay was gone. was it stained clay?

some was regular hardened clay and some was colored. But some of it was still left for some reason

did you played the game with an 1.5.2 minecraft before?

i have only played with the new snapshots for the 1.6 update. I use it as a kind of a testing map.

Cannot reproduce.
Stained clay disappears when playing a 13w19a/13w21a world with 13w17a and horses disapper when playing 1.5.2.

happend to me in 1.6.2 without logging off/out. Horse was tamed, got a saddle and golden armor .. all gone!
REALLY frustrating game experience, please fix this!