Blocks are not decaying.

angryjackbird

I have been mining out my (Older version, if it helps) starter realm. I was lazy to pick up the items but i've noticed after a few days the blocks have not been decaying even though they are supposed to decay at around 20 minutes.

AshiMagari

Only items dropped directly out of your inventory will decay. Anything glassed, mined, or crafted will not.