Needs help with "Project window"

In u4 beta, window “project” now divide on 2 parts, with this surprise i’v get some problems:
1 - Now it “costs” more pixels in width, to correctly find all parts what I need. For me - it’s a trouble =(
2 - As for me, i’v got best workspeed, when all folders show me all parts in their and so i’v can drug them without selecting any folder. And all structure of my project - based on this type of working.
Now, things what i’v done somewhere for 5min - costs 10-20min+.
So - how can i return old project view, as u3.*? Realy need to solve this problem as fast as it can be =(

In new U4 beta i’v found a switcher - one\two column layout, big thanks for this!
Thread lost it’s priority and can be closed =)