Bug appeared after update 1.2.9. Before update when transferring items to/from inventory to a chest you could press and hold the stack (64 items) and a green bar would show above stack and the entire stack would move. After update, press and hold stack and you get the green bar but only one item from the stack is moved. Bug is both in Realms (multiplayer) and single player. I also noticed it you try to rapidly touch the items to move it quickly then the item count gets weird. 44-45-44-44-45 if you do it slowly like one touch a second then the item count does not bug out. Even with the odd count there is no loss or increase of total items.

This makes moving items a serious pain. Thanks.