When I type a search into the search box, sometimes the list of questions returned contains incorrectly handled TeX (of the sort that once was common all over the place here).
Here is an example: http://www.math.uiuc.edu/~rezk/mo-bug-exam.png. The third question in the list is especially bad, but note that "\lambda" and "\Lambda" are not being converted in some of the other questions. The actual questions are correctly displayed on their own page.
$has a special meaning. $\endgroup$