I can't reproduce what you're seeing so far:
But I wonder if you're looking at the same thing in all four places in your two screenshots.
In the Opus screenshot, the folder tree on the left is showing a branch which looks like it is:
Desktop > Fonterra Co-operative Group Limited
That branch is not selected, so it can't be what the file display on the right is showing. And indeed the file display is in a different path:
C:\Users\cappdean\Fonterra Co-operative Group Limited
What happens if you expand the same path in the tree on the left? Are the paths correct there?
Do you know how you got that folder in that part of the folder tree? It would not normally be there, so it has probably been added there by a piece of software. That software may be the thing which is removing the spaces when Opus asks it to enumerate the folders below that branch of the tree.
The File Explorer screenshot is too cropped to see exactly where either side is pointing. Was it pointing to the same place? If not, what happens if you do?