Hello Faint,
no you are not the only one with that problem. I found another threat, where exact the same thing is discussed.
here the link to it: https://community.secondlife.com/forums/topic/464581-marketplace-upload-folder-not-showing-on-edit-page-next-to-sl-folder-name/
I have the same issue at the moment, with no clue at all, what I am doing wrong, or how to solve it. Will open a ticket as well
Kind Regards
Hope