minimize preview column?

[ArjenU 0]

Since Evernote (up?)graded to the new look, feel and (dis)functionality, I cannot seem to mimize the right hand side of the overview screen. I can minimize the left hand column (with a.o. list of notebooks) by dragging the separator to the left. But I cannot do the same with the separator between the mid column (with list of notes) and the right-hand column (with the content of selected note). That right hand column cannot be smaller than, approx, one 3rd of the window breadth...

I prefer to have more overview of the notes over the content of one note. Is is possible to change the layout of the screen...?

Thanks for your help!