Yes, in the meantime I found it and have identified the underlying problem. You land on three different pages for these links: A) The github logo (top left)

Yes, in the meantime I found it and have identified the underlying problem. You land on three different pages for these links: A) The github logo (top left) B) My name in the organizations dropdown (when available) C) My name in the upper right The solution is simple: These 3 pages must be combined into one and the organizations-dropdown must be made visible on all pages. It's pretty obvious in hindsight, I can only assume the github frontenders are suffering from routine-blindness.