Long folder names do not appear when hovering during a move message
Full folder names cannot be seen on the left panel. Yahoo!'s solution was to have the names appear when hovering over them. However, if an item is being "dragged and dropped" to a folder, you cannot see the full folder name.
Either the folder panel needs to be adjustable, or the feature that shows the folder name while hovering over it needs work during a drag and drop action.