Before the Nether Update, I was able to take Book and Quills from a chest, in which the book and quill was constantly being replaced by another book and quill for an infinite source. Moving forward to the Nether Update launch, I cannot take the book and quill out of the chest.
Steps to Reproduce:
1. Have a Repeating Command Block on Always Active with the following command: "/replaceitem block ~ ~1 ~ slot.container 0 stick".
2. Place a chest on top of the command block.
3. Look inside the chest. There should be a stick in the first (0) slot. When you try to quick move or grab the stick with your cursor, it disappears.
Expected Results:
I am able to take out the stick, and there should be another stick in the same slot of the chest because of the command block.
Observed Results:
The stick you tried to take from the chest disappears, however, the stick is still being replaced in the "0" slot of the chest.
Does this happen with other items, or only with Book & Quill?