Hi, it looks like the Wiki plugin doesn't play nicely the new Twenty Twelve theme.
When clicking on the Discussion or History tab of a Wiki page, the tabs disappear and the page layout is messed up. I've had a play with the code, but can't work out what is happening. Think there maybe a closing </div> somewhere that is causing the problem.
Does anybody have any suggestions or a fix?
Update: Same thing happens with the Twenty Ten and Twenty Eleven themes as well.