Dunno if bug or just how it should work, but noticed I couldn’t expand the pattern naming portion of the gui, trying to drag the vertical line between sequence list and matrix when the diskop is enlarged and the border on the right side of the matrix (vertical line between matrix and pattern editor) is set somewhat beyond the most right matrix block. Hope this description makes sense 
, not a biggie, but thought I should mention.
This is on a dual monitor set-up with the instrument editor detached to the left monitor. Windows vista.