Unable to add .novaextension project to launcher

When trying to add a preexisting extension project to the launcher, the file chooser shows it as grayed out and non-selectable. It seems obvious that it doesn’t recognize the custom *.novaextension bundle UTI as a valid “folder”.

However, when opening the file chooser by clicking “Open…” instead of “Add Project…”, it allows you to select any *.novaextension just fine.