I don't understand how this can be a Lightroom problem. Can you show us a screen capture of the problem in Lightroom instead of a screen capture of Finder?
Thank you for taking the time to reply. This is a screenshot from within the Lightroom program. I clicked File - Export... to choose where to export the photos.
That looks like a problem with the system dialog.
For test purposes, pick a different program (like a word processor) and see if the "save as" dialog has the same problem there.
As I understand things, the operating system (OS X) is used to display this and similar windows, and so any error is in the operating system, not Lightroom.
In this specific case it seems that you are exporting 61 files to a hard drive (from the small view of the dialog box behind)
So in that case I am going to assume that you have clicked on the "Choose" button in the "Export Location" section of the Export files box to show the finder view.
As you are in the process of selecting only a FOLDER/DIRECTORY for your export then the dialog box is filtering to show only FOLDER/DIRECTORIES. (As you cannot copy a set of files to another individual file the extraneous files are hidden)
It should work this way for either Windows or Mac.
Likewise, when you try to open a Catalog file it will be filtering for Catalog file types only. (If there are no catalogs present then the lowest level will be empty.)
To add photos you will need to use the import button.
Thanks bhousto90 for the answer.
The point though being that I don't see all the folders and directories. I only see the ones which are in a folder called August for example. The main folder where August itself is located is not showing. It is there so to speak but I don't see it. This never happened before Sierra.
Here are some more screenshots to explain the issue better perhaps (best example is in the 3rd image).
As you can see in the 1st image below, the full path /Volumes/Toshiba 2/ ...... is shown. When I click choose, I only see what can be seen in image no.2 below. It is from a folder which is 2 levels higher than the folder "Edited"
The folders you see here: Ibergereggp... / Japan 2016 etc... are all themselves in a folder called July (which in it's own term is in a folder called 2016 etc...
In this example is exactly what I meant in my original post with being able to click in the white fields without the actual folder image or text appearing themselves. You can see that the text right under Export One File says August... But you don't see the actual folder image. Its just blank and I clicked somewhere in this white space. All you see are the 4 folders which are inside the folder August. I hope now it is better explained from my side.
Only other thing I can think of checking is the folder permissions/attributes for the 'missing' folders vs visible ones.
I checked it through right clicking and then clicking on Get Info, but all seems normal. Is there a more thorough way to check the permissions/attributes? Greetings