Checked with the latest - regular, no beta - macOS / Xojo.
I loaded a project I get from the web and was confused (once more), so to go faster to the code I printed the project to pdf and load it.
I was still dubious because I do not saw an important information… The file type definition that exist in the Navigation pane.
Since the project is only 70KB, and I have some free memory/ssd rooms, the explanation is elsewhere.
BTW: there was only two defined file types.
Doh ! to print the whole project to pdf, deselect any selection in the Navigation pane (or you will print only the selection(s)).
I confirm, here, when I select the file type entry in the Navigation pane and print it, I only get the name as it appears in the Navigation pane. Nothing else.