Logged out in stable on iOS6...
Whenever I open the sidebar, I have to click twice on any of the links to get them to work. On the first click, the link changes to active/hover state (blue highlight bar and lighter grey background), but doesn't load the page. On the 2nd click it actually loads.
The sidebar links seem to work normally if you're starting from a special page, but require 2 clicks from regular article pages.