I am using Win10 menu format. I have lots of groups. I want each group to be one row high only - so that I can see as many groups as possible. All groups using small icons format. Some groups have more than 6 icons, causing 2 (or more) lines. I expanded the menu size and expected groups to reflow into expanded area but nothing happened, the expanded space remains unused. I tried dragging a item over, it created a new group (not what i expected), I tried dragging a group over, did nothing.

Expected operation:  (1) if I expanded the horizontal size then either (2) menu groups should stretch the entire width (preferred) or (3) groups that are off the menu, and need to be scrolled into view, should reflow into the new area (so 2 columns of groups).