When I look at my Table o' Skills, the outlines around the ones I can currently learn overlap with each other and the skills around them, so they are sometimes missing. See, for example, Refining 2 and Focused Meditation in this screenshot: http://imgur.com/UOtKd.
This occurs for me in both Chrome Dev (16.0.899.0) and Firefox Beta (8.0).
Functionally, it all works just fine, but visually it's a bit odd.