GitHub Importer does not list all available projects

I was trying to import some of my GitHub projects, but they simply don't appear in the list at https://bitbucket.org/repo/import/github

I already noticed that you can't import projects from your organization (which is really frustrating), but these are projects owned by myself and they still don't show up.

It seems to me like the list simply stops at some point and the end of it is missing.

You can see my public repositories at https://github.com/oliversalzburg?tab=repositories, but the last entry in the importer is my fork of rsync-time-machine.