Above is the Screenshot of the results of adding new buttons using the the Premiere CC button editor. For the life of me I cannot get these buttons to align to center or align to anything at all. It's just arbitrarily looking like crap.
Buttons will automatically allign to other button ontop or under existing buttons.
Right now they are not aligned because you are missing a spacer after the first two button in the bottom row. Or remove the spacer in the top row by dragging it into the editor window.