Hi John, the short list only shows the five most recently used folders. To display the full folder list, you need to click the icon to the right which looks like a "v". Or if you expanded the list of five most recently used folders, click Choose... I have attached a screenshot which might help.

Sorry, I forgot the mention the next thing. Next to each entry in the full list, you may see little expand/contract triangles (sometimes called twisties). If a folder has been closed, click the triangle to the left of it to re-open it. Or, if you are using the keyboard, after highlighting that folder, press the right arrow key to expand it.