My preferred layout when viewing workweek in evolution calendar is with fairly narrow side panels left & right, leaving the calendar pane almost maximized. But however often I drag the screen dividers to those positions, the next time I open that view, the side panes have returned to a very large size, leaving the calendar squeezed into a narrow area that's of no use at all.

It's a simple matter to drag things back to where I want them, but it sure is irritating to have to do that. Is there a way to make the program default/return to my preferred layout?