Just updated to 3.0.3 in W10 Anniversary Edition, and on the drums page I now have 2 columns for the Box, whereas it used to be 1: https://i.imgur.com/DGRP4nG.png If I try to drag something from the left box to the right at the bottom, it vanishes behind an invisible grey wall. If I let go, it snaps to the bottom, and the top right hand tab jumps to the bottom ...
