Books from bookshelf are now removed starting from upper left corner instead of bottom right corner. Previous behaviour was special and different from other containers, but on the other hand it was good way to make stack data type out of books which might be useful for some redstone contraptions.

Steps to reproduce

1. Insert 6 books into chiseled bookshelf
2. Place hopper under it
3. Observe order in which books are collected

Observed behaviour

Books are collected in order of slots: 0, 1, 2, 3, 4, 5

Expected behaviour

Books are collected in order of slots: 5, 4, 3, 2, 1, 0