2nd-level navigation for Project section can be empty for fresh installs

After having done a tvb_clean command for my installation, I set the settings, logged in and went straigt to the project section.

After having selected the default project (isn't this supposed to be pre-initialized???) I pulled down the section navigation from the header bar... and it was empty.

When having moved around a little bit within TVB, and returning to the Project List, the dropdown was properly populated again.