Can't rearrange the order of folders

I don’t know if this is a bug, but when I try to move a folder in a list (binder or outline) the partition line between folders doesn’t appear, and the folder either bounces back to its original spot or disappears into the nearest folder as a subfolder. Specifically, I was working on an outline and the folders (chapters) went into alphabetical order, i.e. out of order. I couldn’t change them back. They still are in order in the binder, but I can’t use the outline view because I can’t sort the folders to where they should be.

Do I need to upgrade? Is there anything else I can do to make this work?

Click twice in the column you clicked to sort them, to change the way they are sorted to ’not at all’.

That worked - thanks so much.