When I add my website (which is hosted in a subdomain) to my profile it shows OK as in this screenshot.
However if I navigate away from the page then come back it has reverted to the root of the Spanglefish domain.
Copy of message sent to Gravatar Happiness Engineers
When I add my website (which is hosted in a subfolder) in my Websites tab it shows up as a link and a thumbnail correctly.
However when I navigate away from my edit Profile page then come back the website link and thumbnail have reset themselves to the root of the domain.
I've created a page on my website with screenshots to explain the problem.