Outline column width when adjusting width of side panes

I use the default, Binder | Editor | Inspector view, but when I change the middle to Outliner, if I make the Binder wider, the Outliner is shrunk and needs to be scrolled horizontally to see the rightmost columns. Is there any way to have it kind of auto-adjust to shrink according to the adjustment of the side panes? (Using latest beta)