I have a directory of files with multiple long names, such that every column is displayed as the full width of the window. The problem with it is that for some reason, when using keyboard navigation, it does not scroll right when the selection-cursor moves off the right edge of the window. I can scroll right with the scroll bar just fine, and it keeps track of which file is selected correctly, but it the window does not automatically track the cursor location as it does in normal directories. However, it *does* work when scrolling to the left.
(I'm not 100% sure this isn't a GTK bug, as Thunar displayed the same behavior.)