When in dual panel mode and list view, the name column is maxwidth of a single window and all columns are NOT resizable. Makes it pretty annoying to use.
This should be fixed in 1.5.14:
Please report back if you still experience the bug.
I’m also currently experiencing this bug. When in list mode (dual panel view), I’m unable to scroll to the right, grab a column edge and drag it into view. Using 10.9.2 and the latest 1.5.22. Also, with large monitors, list mode details regularly need resizing. Can you add a max/min width preference for list view columns as well? Similar to Column view.