My intention is to create three document templates (document, spreadsheet, presentation) exactly like this guide (https://www.youtube.com/watch?v=pkbMa09LBx0) very straight forward. I had no problem doing this on my dev site.
Now, document and presentation templates shows up in my new-menu (and works as expected), but the spreadsheet-template does not show up at all. I have tried to remove the others but no change)
More info: I have tried to create an extra content type without any template file. This new will be visible in the new menu, until I upload an .xlsx or .xltx-file as template file, after that it disappears. ( I can add a .docx or .dotx).
I had no problem doing this a month ago, is this a bug due to updates on the document library-functionality?