I am using the latest version of Firefox on Linux (bodhi linux) as well as Mac and Windows.
Some $\LaTeX$ is not typeset correctly in MathOverflow: whenever I type a set, like the singleton $\{x\}$, the curly braces $\{\}$ never show up in the draft or after clicking "review your post" -- but they do in whenever I am finished editing and "release" the post into the wild (by clicking "Post your question" for example).
Curiously, this problem does not occur on meta.MathOverflow, but on many other sites of the stackexchange universe, like cstheory, stats, and cs.
Does anyone else have this problem or know its source or best: know how to fix it?
